Yep. This post at geekhack
Explains mechanical keyboards as a whole, and this post
from the same forum gives you a more indepth comparison of mechanical sweetches on the market.
Thing about mechanical switches is that they dont rely on the bottom of the key cap reaching the top of the keyboard base to make contact, but rather to metal hairpin's sitting vertical making contact, or high-fiving. View the gifs in the links above to get a better idea of whats going on.
Again, I'd suggest browns for typing. they're a single piece switch with a definitive feel of when the switch has activated/a key is registered. It's difficult to describe if you've never used one before, but that second link has useful gifs and even graphs if you're interested in looking more into it. These have a relatively quiet click, but are still noticeably louder than bubble cap or scissor switch designs.
The Blue's ARE noisy because they're a two piece design, As you press the top part down the bottom half is pushed passed a bump. Once it slides over the peak the bottom half is pushed or slammed down to the bottom of the key basin, generating the infamous "CLACK" blues are associated with. The key register point is technically further down the stroke, so you could stop pressing the key down at the peak, but the bottom peice would be pushed down allowing the key to register. This results in a definitive, no questions asked "did I push that key far enough?" in both sound and feel, without any perceptible delay.
Blacks and reds both use a linear activation mechanisms, but the blacks require much more force than reds to activate, giving the blacks a more definitive actuating point but making the reds more gamer friendly (cater better to rapid button mashing). There's a subtle but definitive feel for both when the key is actuated/registered but otherwise have a completely smooth/linear force graph as you push the key to bottom of the stroke. reds are a bit louder imo, although i think they register about the same on a decibel scale, the blacks produce a much bassier sound due to heavier mechanism thus overall lower percieved volume
EDIT: missed your last post:
DAS are considered the BMW's of the mechanical keyboards I believe. Never owned one myself, but the only issues I've seen people have with them are a matter of preference, and not an actual issue with the boards themselves. That one you linked would make a great keyboard. Take note of the key layout though. The reason I've never bought one is I don't like what they've done with the enter key.Edited by TheSprunk - 3/6/12 at 1:41pm