They're both tactile. One just clicks. It doesn't make sense to me that one of them is good at certain things and the other isn't.
Blues.
It's not just the click. The blues feel
completely different from browns. Browns are
minimally tactile -- frankly, when I press one, I have to really pay attention to even notice that it
has a tactile bump at all. It's nothing at all like the distinct bump in an MX blue or an Alps (or, from what I hear, in MX clears, though I have never tried them).
Having just gotten a Filco with blues, I
completely see why people say this is not an ideal gaming switch. When I use the arrow keys to navigate the browser or a document, it does feel really strange to have to release past the reset point before you can press again. It is not conducive to rapid-fire presses. For typing text, on the other hand, it feels lovely.
I am considering picking up a second one with either browns or reds. One can be at work and one at home!