My trusty DA 3G is about to go out after ~ 10 years(!). Sensor is still good as ever, but left click is kinda broken, sometimes it doesn't register clicks mid fights.

So I'm not sure which new version of DA to go with, can you guys recommend if you owned some of those mentioned in the heading ?

Also is it possible to somehow clean existing switch in my current DA, if I was to open it up ?

Help is appreciated.