I loved my R.A.T. 7 both times, but on both the failure ended up being the middle mouse button - within a couple of years each time. I would've loved to stick with the RATs forever but their build quality just isn't good enough. I'd keep an eye out for alternatives while you live with this one, because I think it will break sooner rather than later. I switched to the Razer Ouroboros after my second 7.