I keep buying these things refurbished, because I type all day every day and I just haven't found another keyboard that comes close to pleasing me like this one does. I don't know what I'll do when I've run through all the refurbished units, because I simply love this keyboard. I have worn about 3 of them slap out. Yes, after so much time, a key or two will stick here or there (but I've worn the ink off a few of the keys at this point, so it's only fair). The mouse works perfect, and there aren't any major glitches in the software, either. I highly recommend this keyboard, but secretly hope you won't get hooked on it, like I am, because then I'll have competition finding the refurbished. ;-)