Microcenters apparently occasionally have Das Keyboards, so you might be able to get a feel for some blues/browns if you have one of those local. Other than that, the only one you will probably find will be a Razer Blackwidow, which will let you get a feel for some blues. You could also check out your local thrift shops to see if they have some buckling springs or Alps. And I'm not sure if the Blackwidow Stealth is around yet, but when that makes its way to retailers such as Best Buy, you can try browns on that.
