I have owned a masters mouse for 15 years...is that even possible? Either way I love them, and recently got a key board and the new 3. When I compare it to the 2S, the volume gesture controls (i use the scroll wheel button) is very choppy. On the 2S is is smooth to change the volume. Also I can't seem to get the mouse to hold the settings. I have to restart Logi software every 10 min to have the gestures work.