I am honestly very disappointed with them.
A little back of myself: My first mech board was a blackwidow, then a TKL filco with blues, then an IMB model M, and now a Filco ninja with browns.
It's going to be kind of hard trying to explain this so bare with me.
First, I absolutely adore blues. From their feel, to their sound, and even their color lol. I've tried black switches before at a local Fry's and really enjoyed the feel of linear switches, but I hated how much force they required. I really want a Red board but due to their availability, I have not been able to obtain one yet.
Anywho, so I revieced my Filco with browns about a month ago and figured I would love it since I enjoy light switches as well as tactile switches. My first impression was "these are horrible." The tactile bump was barely noticable (which btw I've read about this before hand) and it wasn't that light. I think this is primarily due to the fact that the tactile bump on browns is placed much higher than blues. Brown's just felt like a "dirty" switch IMO.
Since the blue's tactile bump is lower (I would say about the half-way point of the switch) it allows you to build momentum as you are pressing the key down, so that when you do hit that "bump," you don't really have to add more force. Browns on the other hand, have their tactile bump much higher and that makes the switch require much more force from the start. I want to say almost like rubberdomes but not to that extent. You guys kind of get what I'm saying? I don't know, this is jsut my opinion.
I will probably end up selling my Filco with browns and just wait for the QuickFire to be release w/ reds.
Another note, I know statistically browns are supposed to be lighter than blues, but to me it felt like the complete opposite.