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: I have tested mice with lasers in various positions. I have tested them with the laser at the end of the mouse, directly underneath the left click button, and a the center. This mouse has it on the far right, midway down the mouse. I have found zero difference in how the mice track on screen between differing positions, when you use your hand in proper ergonomic position.
Pros: Great battery life, great ergonomic feel, and the free scroll mode can save on carpel tunnel issues. But learn that the button below the scroll wheel turns it on and off, so you can learn to use the mouse!
Cons: I've heard some say that the button on the side for task switching is too easily hit, but I feel the button has enough tension to prevent this. If you're gripping your mouse that hard, you need to loosen up your grip, or expect to pay a doctor big money in the near future for carpel tunnel relief surgery. Learn how to properly handle a mouse, and you'll find this mouse is ideal.
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.
Summary: So it took 2.5 yrs. but the batteries in this awesome mouse have died. I was beginning to think that I would never have to replace them ever. I am a everyday gamer, lots of FPS and RTS games so I use the heck out of the thing too.