Summary: This is definitely one of the best wireless mice I have ever used. The battery life is amazing (I have used it more than a year without any battery replacement), and the hyper scrolling feature (or whatever it is called) works like a charm. The latter helps me a lot during programming sessions as well as reading lengthy articles. Highly recommended!
Summary: I bought this mouse as a replacement for my m310 and was very happy with the upgrade. I did find however that constant use of the hidden thumb button for gaming or anything else does make the rubber on either side indent a little, but it's definitely not a flaw that would make me reconsider this purchase.
Summary: Had this mouse for over two years. Almost every button still works, except for the middle button which I broke. Pros: Incredibly comfy for me; Scroll wheel uses a separate button to switch modes unlike the Anywhere MX; Forward and back buttons (I switched these to control the volume); Super long battery life even for a moderate gamer and daily use.
Summary: Two weeks ago I switched from a PC to Mac laptop to get exposure with the technology. To my surprise, the system was sluggish and felt sloppy, quite the opposite to what I expected... what was going on? I started paying attention, and the end result was a bit funny: it was the Apple mouse that was spoiling the whole thing for me!
Summary: I got this mouse about two and a half years ago. The battery charge indicator shows 56% (using the included batteries.) Very impressed. This is 6-8 hours a day, 5 days a week. If you never want to worry about changing batteries, this is the mouse to get. Great size and very comfortable, although sadly not ambidextrous, which is a bit annoying as I do like to switch hands periodically to reduce stress.