If you could stretch that budget ever so slightly I would say get a WASD, but wait until they introduce PBT keycaps later this year. Or if you have a board w/ Cherry keycaps that you're not using get a WASD "barebones" and be done with it. My ONLY complaints with WASD (and I'm typing this on one, with blues no less, right now) are that I prefer the styling of Filco/Leopold (like the more compact, squared off case) and that the space bar isn't heavier weighted (but that's fixable if you can solder, and is common to most mechanical keyboards save for Cherry branded ones.)
Whatever you get, hope you enjoy it!