I’ve been using MX masters since the first model, my only gripe however is I always wear through the thumb pad button well before the rest of the mouse is showing any wear, the rubber was just not up to scratch. All of my 2s’s have a hole cut in the rubber there to get to the button below just to make it work.
The 3s that I have a couple of are pretty sturdy and seem to wear much better in that regard, and the metal scrollwheel on that model is better too as it doesn’t have rubber to wear out and go gummy either.
The stock pads always wear out super fast too, so I put glass on one of them and it’s been a game changer.