Touch Mouse is everything the Apple Magic mouse failed to be; it offers best of both mouse and touchpad with almost none of the negatives of either. If you can live with its slippery body, it will make your Office-Fu more effective.
With enough practice to master a trackball, the Logitech M570 will reward your time and effort. To put it simply, this is one of most precise and usable trackballs. If you want an ergonomic input device, this is you want.
Even though this is a notebook mouse, SmartFish Whirl Mini still keep your hand from aching after long usage. The only caveat with it is that you need to know how to hold it properly as this is a "palm" grip mouse.
Arc Touch's size is perfect for road warriors, yet it is still comfortable to use for long period of time. The intuitive touch sensitive sensor bar works well too but there's no forward and backward thumb buttons that might deter some.
Anywhere MX ably showcases Logitech's talents as expert mouse builder. Darkfield tracking finally realizes vision of perfect tracking on glass and reflective surfaces, and overall product execution leaves little to be desired.
The Explorer Mini attempts to be everything to everybody, but ends up being a compromise that suits right-handed desktop users with small hands best. A few key omissions make this a decently executed, but flawed package.
Arc Mouse brings a unique folding design to the portable mouse combining at once style and portability. Despite a few usability and functional issues, the fundamental concept is well executed and well worth the price of admission.
Logitech MX Revolution is hands down the best general use mouse that I have used to date. The free-wheel scroll feature is destined to be copied like college algebra homework. Casual gamers will also find the it performs well.