So here's the thing. When we say "gaming" it seems everyone is ONLY talking about FPSs here.
As far as I can tell browns are AWESOME for me general gaming (including FPS) and literally PERFECT for RTS. I've played with my friends SteelSeries, it's ok, didn't love it. I can feather the actuation on my Topre better than the black if you want to go that far.
For me:
FPS - Topre > (Brown = Black) > Blue
RTS - Brown > (Blue = Black) > Topre
So...yeah. That's why my desk looks like this:
For WoW/TF2/CS I use the Realforce.
For SC2/HoN, or if I'm too lazy to switch back to the Realforce, I use my Filco.