I’ve been using Logitech’s Performance Mouse MX and its former model for about four years. They all have one important feature: hyper fast scrolling. Since I’m an engineer who has to deal with source code files that easily contain thousands of lines, I have to scroll an ordinary mouse hundreds of times to browse a file. With hyper fast scrolling, it only takes one single scroll as the wheel spins with minimal friction. This really reduce the stress on my fingers. It can also easily be switched back to normal scrolling behavior (by pushing down on the scroll wheel) when I’m not dealing those gigantic files.
— Jordan Cherng
Similar to Jordan’s Logitech Performance Mouse MX is the Anywhere Mouse MX that I’ve been using for the past two years. Unlike the Performance model, the Anywhere model is significantly smaller, and is easily packed in the included carrying case. Despite the small size, I find it to be one of the most comfortable mice I’ve ever handled which is especially surprising as I have large hands!
Outside of size, the two mice are remarkably similar. Like its bigger brother, the Anywhere Mouse also features “hyper-scrolling” which is very useful when dealing with large documents or long web pages. The scrolling (among other features) is customizable with the included Logitech software (that works for both PC and Macs). Outside of scrolling, they both feature programmable buttons, and most importantly very accurate tracking. Logitech calls their technology Darkfield which they claim is better able to respond to irregularities on a surface (and thus respond more accurately during tracking). I’ve used mine on many shiny surfaces which normally confuse optical mice without any problems, with the biggest surprise coming when I used it on a glass countertop which is normally a no go for laser-tracking mice.
The only other significant differences between the two are that the Performance Mouse can be charged via micro-USB, and that it has a few more buttons for those who want to maximize the customizability of their mice. Both use Logitech’s unifying receiver (which we’ve reviewed in the past) and have excellent battery life. My Anywhere Mouse gets about 4-6 months of use from two rechargeable AAs.
Despite being significantly more expensive than other mice on the market, I have found that these higher end Logitech mice are worth it. They are comfortable and reliable pieces of technology that seem to disappear in use, and for that I’m incredibly grateful.
— Oliver Hulland
[Note: Apologies to all those readers who are left-handed as it doesn't appear either of these mice are ambidextrous.--OH]