Very good choice on decideding to go filco, very nicely made keyboards.
The noise you get from browns is a firm defined clunk from the keys bottoming out, as apposed to the higher pitched click noise from the blues, you still get the mechanical "feel" for definite, may not however sound as mechanical as the blues.
i went for the browns as i felt the more high pitched click noise of the blues would get a bit old over time, but i still wanted the tactile clicky feel.
browns are supposed to be best of both worlds, all i can suggest is ordering browns and if they are not right for you return under DSR and get it swapped for blues, or visa-versa, bit of a pain in the **** buts its the only real way to find out unless you know someone with both.