Logitech MX Ergo Wireless Trackball Mouse – Adjustable Ergonomic Design, control and Move Text/Images/Files Between 2 Windows and Apple Mac Computers (Bluetooth or USB), Rechargeable, Graphite

Ive been using the Logitech M570 exclusively for as long as I can remember. Currently I have 5 or 6 of the M570s lying around my house connected to various computers. Ive convinced my wife, co-workers and a few friends to switch to the M570. The M570 had one major drawback--no bluetooth connectivity. Like a lot of M570 fans, I was elated to read a couple months ago that Logitech was releasing a bluetooth version of this popular trackball. And then I actually used one. For me, the Ergo is uncomfortable to use. It is the first time using a Logitech trackball for 20 years that I felt any discomfort in my hand or wrist. This will likely vary by individual, but there are four flaws to the device that have led me to abandon it: 1. The metal riser on the MX Ergo increases the height of the device which results in awkward hand/thumb placement as compared to the M570. 2. The extra weight and the textured grip nature of the MX Ergo means that it has less "give" when you move your hand onto it. Rather than my hand gliding over the plastic of the M570 (especially when I am reaching to move the cursor without looking at the mouse directly *or* if Im readjusting my hand placement), the MX Ergo resists the movement of my hand. The result is something that I feel in my wrists after a few hours of use, and not in a good way. 3. The ball does not seem to roll as freely in the MX Ergo as it does in the M570. I used this for about a week before giving up on it. Four weeks later, I could still feel faint aching in my trapeziometacarpal joint. 4. As anyone who has owned an M570 knows, the ball needs to be removed periodically as dust, etc. will accumulate in the area that holds the ball. This is much more difficult to do in the MX Ergo. There is a hole underneath the ball, but it is not nearly big enough to fit a finger through. Youll need some sort of device small and strong enough to dislodge the ball, but also avoid scratching it. Really dumb design decision on Logitechs part. I have to wonder how much ergonomic testing of this they did, or if this is a quality control issue with these early units. Its a huge step backward from the M570 IMO.

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Bought one as soon as it was announced, and boy was I disappointed. The left button didnt click straight out of the package, and after some gentle tapping, I got it to at least click. However, the button is sticky, which means unless I did a very quick tap, the button would stay down after I lifted my finger. Since the left button is the primary one, this was a deal breaker. The ball also rolled poorly, which is a comical regression compared to all previous products from Logitech. A trackball has two primary requirements: a ball that rolls and a button that clicks. This $99 piece of junk failed both. This is the first trackball I have returned after 20+ years of using them.

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Flaw: There were other reviews about "misclicks" - I feel this is what they were talking about. The copy of the mouse I got is prone to having the click in the pointer finger "stick". Not due to it sticking, but lacking a "bounce back" or recoil. In fact, there was a noticeable difference in the right, middle-finger clickpad, which was sharp and the responsive, and the left (pointer), that sinks in. I have to consciously attempt to raise my finger - like *lift* the finger from the mouse. Compared to a g400s, which has a great click pad to it thats reliable, I can repeatedly click rapidly and my finger never leaves the surface. The MX ERGO will let your finger drag and sit. This is critical if you intend on doing any gaming. And I gamed fine with the MX570. OK: Im on a 4k monitor and itd be nice if there were more ways to toggle sensitivity. At the moment, there was only a very precise sensitivity, and one that didnt perform as well on a huge monitor. I had to adjust it through the software. Pros: - The quality of the hardware is excellent, despite the click - The accuracy of the ball/laser is excellent. - The scroll wheel in the middle is also fluid and accurate. - The right-click is great.

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Ive been using Logitech trackballs for 20 years. I have been using the M570 since its first release and although I like its functionality, they only last for a year or so before the left click button fails. Logitech has known about this defect for many years and refuses to upgrade the switches. I have bought at least a dozen of these due to the left click failure. I heard the the MX Ergo was a major upgrade so I took the plunge. Ive been using it for the past couple of hours and its basic functionality is very close to the M570 with one huge exception: you cant adjust the scrolling resolution. In the Amazon comments section it scrolls at 6 lines for each tick of the scroll wheel. The M570 software allowed the scroll rate to be set as low as 1 line. On many websites the text entry for comments is in a narrow window and you cant scroll back to previous lines if the scrolling is set to 6 lines minimum. Logitech should add scroll rate adjustment to their Options software for this device. Why they would take away this capability in a supposedly upgraded product is inexplicable. If this device had this option, I would give it 5 stars; without it, I give it 1 star, a major fail.

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Ive been using Logitech TrackMan Marble devices for ~20 years.... I own 3 of them, starting with a 1st gen button and then the later generation model that replaced the middle button with the scroll wheel. I have them both at home and at work. The TrackMan series have been incredibly durable and usable devices (basically, Ive never had a problem with them). I bought the new MX Ergo hoping to find it would be a good upgrade with better ergonomics..... Unfortunately Ive been disappointed since the moment I opened the box and placed it on my desk. Unlike the older designs the buttons dont align with your index and ring fingers and the scroll wheel doesnt line up with either your index or middle fingers. This makes things awkward because, while you can left/right click comfortably, you have to move a finger (index or middle) to operate the scroll wheel. Your ring finger doesnt have anything to do and the placement of the buttons wheel doesnt make it comfortable to rest where all 3 functions are accessible to 3 fingers. The thumb button is awkwardly placed and cant be reached without contorting your thumb off the trackball and/or moving your whole hand. Unless you have the unit in the "rotated" (angled up) position your pinky finger kind of flops around and falls off the unit and doesnt have a comfortable resting place. Pretty much an all around failure of poor ergonomics / usability over Logitech designs from 15-20 years ago, where all your fingers and your whole hand rested comfortably on the unit. Seems like a solid device that worked out of the box, just has terrible ergonomics.

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First, the battery lasts about 2 days on a charge, as opposed to the 6 months I got on a single AAA battery on the previous thumb trackball mouse that costs about 1/3rd as much. It then takes several hours to charge, so its basically a wired mouse. The other version also had a nice spot inside the battery area for the USB adapter, which was great for travelling since it didnt stick out of the laptop or get damaged if left in. Also, the ball on this one requires a stick of some sort to remove the ball for cleaning, my pinky finger was all I needed for the cheaper version. This one also weighs about 3x as much. I tried and tried to like this one since its so much more expensive, to justify the excessive cost, but after a few months, it just refused to pair with the USB adapter. That was the last straw, I threw it out. Its inferior in just about every way to the cheaper Logitech thumb trackball mouse.

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Logitech has sunk to new lows. Now they have an MX Ergo, and a MX Ergo PLUS. Theyre they same mouse. One of them has a really cool rubber riser though that increases the tilt. I like that a lot. The MX Ergo PLUS is a cool product. Its a cheap rubber riser. The first mouse I ordered had one. The new mouse does NOT ship with one. I called Logitech and requested one, and they denied me. I wouldnt do business with a company that creates two similar products only one of which has a cheap mold of a rubber-plastic (that sells for the same price) and one without. The MX Ergo Plus isnt sold on Amazon, its exclusive to brick and mortar retailers. I wouldnt suggest purchasing the version without the rubber-riser.

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