First time mechanical keyboard user here. Decided to get one to use at work where I do plenty of typing and programming.

Tried out blues, blacks and browns at the shop. My impressions:
Brown - Expected it to have a very nice tactile click that can be felt, but disappointingly, it's not as prominent as I expected. Abit disappointed as I expected to like these the most.
Black - Very smooth. Feels weird at first, but after awhile I started to like the nice feel of it. Very quiet too.
Blue - The audible click is indeed loud, but if used in an environment which is not quiet, its not as bad as you think. Very nice sound and excellent tactile feedback. Feels great for typing.

None of the shops here in Sim Lim had reds or clears, so, of course I ended up with blues.

Took a CM Storm Quick Fire, very happy with it so far. Also, the tenkeyless format is really nice and space saving.