First, the common switch types and their differences
MX Black
Linear up/down switch
Not-tactile (can't feel if the key is pressed down to the point it activates)
Non-clicky (doesn't make a clicking sound when you press on it)
60g (can be up to 80g) of actuation force needed (how much force u need to press down on it for it to trigger)
MX Brown
tactile up/down switch
Tactile switch (you can feel it when it is pressed down to the point it activates)
Non-clicky
55g
MX Blue
Tactile up/down
Tactile switch
Clicky
60g
MX Red
Linear up/down switch
Non-tactile
Non-clicky
45g
IMO, MX Brown is my preferred choice.
The type-writer clicky sound from the MX Blue switches annoys me...and the people around me.
The MX Black switch is nice, but they are quite heavy. It can make your hand tired after a long gaming session.
MX Red is too soft / sensitive due to the lower force required.
I had a Corsair K60 keyboard that uses MX Red switches. It ticked me off as the keys were way too sensitive. I would accidentally trigger them when I don't want to. I gave it to my brother. He hates it as well.
I'm back to a membrane Logitech G110 Keyboard until Corsair releases a Anodized Black K70 keyboard with MX Brown switches (or something else with MX Brown switches catches my eyes).
EDIT: Oh I total forgot about this. This could help you: http://www.overclock.net/t/491752/mechanical-keyboard-guide
