My two cents: I've chosen between brown and blues, and i prefer the blues.
The difference between them are not that big, but i preferred the blues, due to the tactile click, on top of the tactile sound. Both giving me good sense of what i'm typing.
In a blind test, i would have a hard time telling the difference between blues and browns if i couldn't hear. So if you don't feel like having a noisy keyboard, and stand between browns/blues, definitely go for browns. If you want the clicky sounds, go with the blues.
I can't comment on reds etc. as i haven't spent much time with them.
But reds are linear, and have a smaller travel time, so they are in theory faster for gaming. But the early actuation point makes it a lot easier to spam the reds, than the tactile switches.