http://elitekeyboards.com/support.php

scroll down a bit, you will see how they differ

Black = high force, no feedback, no click
Blue = low force, click + feedback
Brown/Clear = low force, feedback without click
Red = low force, no feedback, no click

I'd recommend browns, because you get the feedback for typing and button presses, it just takes a while to stop bottoming out on your keystrokes.

So the parts arrived and I'm installing the cpu, when putting the bracket down under the little screw on the bottom, are you meant to apply some force when pulling down the lever? There appears to be some resistance.

Also how should i apply the thermal compound? A small amount in the middle and push down with the cooler or spread it out?

I'm sure there are plenty of tutorials on youtube on how to do these things.

yes there is meant to be force of the little lever, just make sure the cpu is in before apply pressure to the lever so you dont **** your pins. yes force is normal

yeah - the little indented parts on the sides need to line up with the socket on the board.

Also listen to ninjashak - google this shit or you'll ask every question there is and end up annoying everybody and not getting any help.