Mouse is awesome to use. Only complaint is sometimes my button mappings / customizations are dropped and then I cannot get into the logi options app to reset my mappings. Not an issue with the mouse itself
Smoother scrolling, and I love the clear covering on the left and right click. What an update of improvements! I want 2 more! I have 5 prior versions of the MX Master, this is the BEST MX to Date!
I bought this and the MXS keyboard together. 100% worth it. I use the programmable keys to do Excel functions I normally do by hand. It's safe so much time. And the mouse feels so comfortable. The thumb button is a little weird at first. But it's worth it