[rf15]

afaik they still use cheap switches for the main buttons in those, which lead to problems with the previous model of that line. (mostly the left mouse button failing after 2y). I will still use them, but I am definitely looking for a good alternative with better parts.

[Krasnol]

Mine must have or reach 2y soon. I got one just as it's been released for work. Doing a lot CAD with it. Doesn't look like it's getting worse.