Just to be clear, any DMX controller will work with any DMX fixture. There are some LED fixtures out there that are not DMX. Sadly, any controller out there under $ 700 is very limited in functionality and ease of use. Watch eBay for a used ADJ/Elation Showdesigner or Showdesigner 1, typically available for $199-299.
As Josef suggested, avoid the controllers that are dedicated for LED wash fixtures, as they are seriously limited both in application and expandability.
Don't scrimp on the controller, and plan on investing some time in learning how to program your system. Pre-programming is essential.