I'm not trying to get too excited over my new Noppoo Choc Mini with Brown switches, which I've used for less than 1000 characters... but I'll say Brown is the best all-around, after having used many.
I tend to like some character in the keystroke for Starcraft 2. For that, I actually prefer the game-dreaded Brown to linear Red or Black. There is some truth in the Blues-for-gaming hatred, they are kind of weird for FPS and the like. It isn't the repetition, there's plenty of redundant presses in SC2. For me, it feels like I'm rolling over keys easier with a linear switch, as if the keyboard is an extension of my body and I'm just moving around on it. Games like SC2, on the other hand, have me knowing I am pushing A to make mArines, and I welcome the clickiness and keyboard feel.
Oh, and don't worry, a Brown Filco was my first. Now I know what I've been missing out on.