You really have to go try them out. Everybody prefers something different in terms of what switch they like. Some provide tactile feedback when the actuation point is reached, and some do not. Generally, Blacks are regarded as gaming switches, Blues as typing, and Browns as somewhere in between; Reds tend to be the odd one out.
However, I have seen PLENTY of people who type on Blacks and game on Blues; it's really a matter of preference.
In terms of mice; If you're only doing FPS gaming, then you won't want something like the Razer Naga, as you won't utilize all the extra buttons. Instead, look for something like the Corsair M65 gaming mouse. It has on-the-fly DPI adjustment, a good scroll wheel, the two buttons on the left side, as...