You may want to look at the Filcos with brown switches. You can get them from the Keyboard Company on Amazon. The Steelseries boards use Cherry MX black switches, which are non-tactile linear switches. You may find those unsatisfying to use for playing an RTS, but for FPS, they are apparently preferred.
There's the Zowie Celeritas, the Ducky keyboards with browns, leopolds if they ever come back in stock. You may also enjoy the Topre RealForce, but that is quite expensive (about $265). You can get it from EliteKeyboards though, if you're interested in it. It is a good introduction to quality keyboards, but I would recommend getting the uniform model for gaming.
There is the Deck Frost/Ice Tactile models, which use Cherry clears, which are a heavier version of the browns (basically -- let's not get hung up on particulars at the moment), as well as the Das.
You can also get Cherry G80 with brown switches:
http://cgi.ebay.com/WH-Black-Cherry-G80-Mechanical-Gaming-keyboard-3-Switch-/300575765501?pt=PCA_Mice_Trackballs&hash=item45fbb633fd. Qtan is a member here, and has some good deals. It usually takes about a week to post things to and from China, but if you're willing to pay for it, it's likely he would be willing to ship it via a faster method. Just make sure to tell him what color and what switch.
I can't think of any others at the moment. I would recommend brown if you like light, clear if you prefer heavier. Blues are quite loud and high pitched, and some people complain about double tapping on them, though I think that's really weird, personally.