Corsair is having a Memorial Day sale on its refurbished products. I have purchased three mechanical keyboards from them, all refurbished, and can say nothing but great things about the integrity of the products.
I use the M65 mouse, and it is great for FPS (I play CS:GO) as well as professional development (the sniper button helps with photo editing when needed). There are too many products to list/choose from so take a look around!
Mice: http://www.corsair.com/en-us/cert…ing%20No
Keyboards: http://www.corsair.com/en-us/cert…ing%20No
Cases: http://www.corsair.com/en-us/cert…ing%20No
PSU’s: http://www.corsair.com/en-us/cert…ing%20No
Cooling: http://www.corsair.com/en-us/cert…ing%20No
Headsets: http://www.corsair.com/en-us/cert…ing%20No
USB Storage: http://www.corsair.com/en-us/cert…ing%20No