This contoured mouse fits my right hand just right, I've used oddly shaped mice, and they are a bit uncomfortable for long-term use, but this is perfect.

A bit flimsy compared to other better Logitech mouse

a bit dirty.

Because I came up short, I then try to jerk the mouse a bit more, and it zooms off to the other side of whatever I was trying to click on

Best mobile mouse around, a bit heavy and center wheel button a little hard to push.

I can't recommend using the free spin when browsing, you'll scroll down a bit and it'll scroll back up.

I spent the extra money for this mouse because I had been using a cheaper mouse and wanted something with a bit smoother precision and control

Has an ideal number of buttons although the thumb one is a bit hard to press

The button on the thumb rest is unique and very much appreciated too!I did have to return and get a new one because the tilt scrolling was too sensitive, and I *STILL* feel it's a bit too sensitive

(Google how to fix Logitech mouse switch, it's a bit tricky to do)

A bit loud if you have the tracker spinner on the clicker.

Coming from a corded mouse, I was a bit hesitant to jump into a cordless one.