I have a R.A.T 5 for 7 or 8 years can't remember exactly , the switches are crap , started oiling them 3 or 4 years ago to stop registerting 2-3 clicks at a single click , changed the cable on the 4th year since the original was with aluminum or some other stiff metal alloy that snapped somewhere , the sensor is sticking in horizontal axis only when it gatters the tiniest particle of dust. This is not a mice but hell. My old 10$ Logitech optical mice from 2004 had only one issue for a decade of use the switches cut channels in the buttons plastic and were not registering clicks which was very easy to fix with glue and aluminum foil. So be sure what you are getting into when you order mice since it is becoming part of you and for me personally is really hard to switch from any mice to any mice it takes alot of accommodation and most of the time I just don't want to let go the crap I have.