I don't really have a use for back-lit keyboards, as I don't use my computer with the lights off. Lights on mice, meh. I don't factor that in when looking at mice, but sensor performance, weight, and comfort. Two of the most popular mice used for gaming are the Microsoft Intellimouse Explorer 3.0 and Wheel mouse Optical 1.1a. They're only 450 DPI, but I prefer my 3.0 over my Deathadder because of the slightly different shape.