Comfort and usability are highly subjective so what we find useable and comfortable you may not. What is not subjective is this is one heck of a customizable trackball that puts all other balls to shame. We can not even describe how comfortable it is use and rather you have to handle this ball to really feel the difference. Like any computer device your hand is going to become fatigued over long periods of time, but by simply changing the angle you hold it does reduce fatigue. So much so that our hand is not usually fatigued even after 12 hours of constant use. With the Elecom and Logitech M570 this means adjusting your grip from a standard position to almost ‘palming’ it every so often. This is actually why we use a Kensington trackball along with a M570 – as the hand position is radically different. With the MX Ergo line you don’t need to switch trackballs… just switch the tilt – with a flick of your wrist. This really is a game changer and if you like trackballs it may just eliminate the need to buy multiple ones. Thus the price is a bit more palatable. It however is still very expensive and why the overall score suffers so much.
Honestly, if the price was the only issue the MX Ergo series would be a slam dunk success bordering on ‘no brainer’ territory. Some day it may indeed be just that, but it never will be until Logitech fixes their sub optimal software. Right now the software is a mess and even Elecom is better. That really is saying a lot. However, even with this taken into account, overall the MX Ergo is still – barely – worth its price. Put another way, yes it is bloody expensive but it will make your life easier and possible healthier too. As such while we cannot whole heartedly recommend it to first time trackball users for experienced users it is the best single upgrade you can purchase right now. Less hand fatigue, good hand feel, great precision all combine to make it one heck of a trackball – unrefined software and nose bleed asking price or not.