Kensington Pro Fit Ergo Vertical Wireless Mouse Black 6 Buttons

Let's start off with credentials. I work all day long in front of the computer as an animator and I play plenty of competitive online games on the side. I've owned over a dozen mice in just the last three or four years once I really became a computer enthusiast; everything from 13 dollars, to over a hundred, and in all shapes and sizes, ergo mice, to gaming mice. Suffice it to day, I like to think I know a thing or two about what makes a good mouse.But most importantly of all, I've actually owned this exact mouse before, but it went by a different brand name, Victsing, and was half the price of this Kensington mouse when I bought it. I thought that thing was the bees knees when I first got it two years ago, but boy, I realize only now what I was missing out on. The shape and button placement is exactly the same as the previous one, but the sensor, oh the SENSOR!! Good heavens, you really do get what you pay for.Out of the seven wireless mice I now own--with the exception of a wireless gaming mouse that costs NINETY-EIGHT DOLLARS--this is the only one that has pinpoint accuracy, with no stutters and no cursor drift at all, even when subjected to my COMPLETELY unrealistic testing (which is just me sliding the mouse back and forth AS FAST AS HUMANLY POSSIBLE across half my desk. It's a simple test, but it'll VERY quickly reveal an optical sensor's true performance capabilities, as, at higher speeds, a bad sensor will actually stop registering movement, or even literally begin to register the mouse moving in the opposite direction.) Something about the sensor, or the onboard processing, or maybe just the rock solid connection to the usb dongle of this Kensington mouse, makes this thing perform more like a 60 or 80 dollar one instead. It punches WAY above its class in performance, while still keeping all the ergonomic aspects I loved of the previous brand of this same mouse.The weight is very nice, nothing like a lightweight gaming mouse, but that's absolutely not the point of this thing anyway, so I don't dock it for that at all. It glides very well indeed on the dainty little pads, the clicks are wonderfully light, the shape is still as perfect as ever, even for someone who has miniscule hands like myself. The build quality isn't TOP notch, as I can very easily see overlaps or gaps in the plastic seams, but they occur only in places where your hand doesn't touch anyway, and it doesn't even matter, because it's held together very solidly anyway; no creaking of any sort.TL;DR:Of all the ergo mice I've tried, none feel better in the hand than this one, and the performance is way WAY better than I ever expected at this price point. If you're on the fence, just do it. Unless yours arrives broken, I can pretty much guarantee you won't be disappointed.

I am praying this one will last longer than the other two brands. Which only averaged 3 months of life.

I like the mouse. It fits nicely in my (medium-sized) hand, and it works without issues on my Mac.The problem is that I read about a major security flaw in KensingtonWorks software that you can (but don't have to) install in order to remap the mouse buttons. Apparently, there are some issues with it, and it is open to remote code execution vulnerabilities. The mouse _works_ without this software, and you can also install third-party utilities to remap the buttons, but the complete silence of Kensington about this is something I don't like. It's not a cheap mouse, and support (including protection against software vulnerabilites) should be better than that.

I got this to help resolve constant wrist pain, and while the shape of the mouse is comfortable, an annoying issue with the software may mean that this won't work for me. The issue is that after my computer boots, it takes upwards of 30 seconds before the mouse buttons start working. The cursor itself will track, and the scroll wheel works, but none of the buttons will register, and after that initial period of time, I have to press the right click button, and then the other buttons will start to work.I have isolated the issue to the KensingtonWorks software for configuring the mouse. It seems that once you install the software, the mouse requires for the software to load before the buttons will register in the operating system (I'm using Windows 10, build 2004). This issue did not occur when I used the mouse without the KensingtonWorks software installed. Also, if I install the software, but then remove it from the list of startup applications, then the buttons will *never* start to work.I have tested this on two separate Windows 10 computers, with identical results. I installed the latest version of KensingtonWorks available on the company website (v2.2.2.0). In essence, this adds something like 30 seconds to the system boot (since I can't really do to much effectively without the mouse functioning).If I uninstall KensingtonWorks and reboot, then the mouse works like a normal mouse (using the default Microsoft mouse driver), but then I do not have any customization of the buttons. I'll try to take this up with Kensington support, and perhaps it's just a bug affecting this particular version of their software with this particular version of Windows, but without a resolution for this issue this mouse probably won't be a keeper.

BUT...couldn't get the buttons programmed with their Kensingtonworks on my MAC pro Mojave.Returned