I've been using a steelseries sensei raw (bought second hand for $35, new price is $109/129)
My sensei raw is working well, but if you are getting one, try to get the rubberised version
Mine is the glossy surface one, after playing there's a ton of sweat and fingerprints (no smell)
Also watch out, the mouse wheel might break after a long time
When you scroll down there's a 5-10% chance it will scroll up instead
Check 3klikphillips review too, we have the same problem.
Other than that sensor is fine although 2nd hand, no problems
You can put macros, like for csgo spam mouse click/spam space etc