I buy Razer mice from Best Buy. They offer a two year warranty for a little extra, and it is worth it for me because mice don't last me two years usually because I type and click hard. Same for keyboards. The warranty usually is enough to get a free mouse each time after, and you may have enough left over to pay for the warranty again, due to depreciation of the old mouse, if they still sell it. As far as a mouse, it depends of you use a claw or palm grip. I use a palm grip, so I have used both Razer Naga and Deathadder. The new Deathadders break too easily, so I use the Naga and use Razer Synapse to disable all the extra buttons.