Lets see, T-50 base and grip for 2.5 years, only recently experienced the loss of one button on the grip (Top right side rocker). T-50 throttle 2 years and no issues what so ever. I may have just got lucky, but I'm still happy with my purchases. Recently rec'd a T-50cm2 grip and so far, so good. Will either send original grip back for repair, or ask them for a replacement button, and keep it as a back-up.