Take note of this; when you're out in a market for a mechanical keyboard (mechanical switches from Cherry are currently popular), you must try it out or look up each of the switch's features, advantages and disadvantages and recommendations for the end user, before getting one. One of these should match your preference. I'll go over a few of them:
Cherry MX Brown: They are tactile, which means you can feel a bump when pressing down a key. A "bump" indicates the keystroke has been registered. It's actuation force is about 45cn, which makes this key switch one of the lightest.
Cherry MX Blue: They are clicky and tactile, which means you can not only feel a bump, but you can hear a click. Both indicates again, a keystroke. Actuation force is about 50-55cn (some people say it's 50, while other say 55, but take it as between these 2 numbers). Popular for typists.
Cherry MX Clear: Not that popular out in the market currently, but this is the type of switch Vortex's keyboard uses. They're basically more stiffer version of the Browns, with 55cn required.
Note that the switches I pointed above are all tactile/clicky switches.
The switches below are both linear, meaning that there's no bump or click, it's straight-down smooth, vice versa. So you can't really tell if the keystroke has been registered unless you look up on the screen. These type of switches are preferred by gamers mostly. However, their actuation force is significantly different.
The Cherry MX Red switch requires just 45cn to register the keystroke. This is what most keyboard enthusiasts call the lightest keyswitch of all. It's currently the most popular keyswitch for gamers.
On the other hand, the Cherry MX Black switches are the most stiffest keyswitch, requiring 60cn to actuate. Not the kind of keyboard for typists, but excellent for gaming. The switch hardly appeals to anyone at the moment.
I currently own 2 keyboards; both are Duckys; DK-9087S with MX Brown switches, and the 9008S2 with MX Black switches. Currently waiting for the IBM Model M to join the family. :3
This site provides very useful info. They even outline more mechanical switches, but some of their articles are "empty-cupped."
EDIT: Just realised now that you got got a K60, dammit, missed that there :P