For a no holds barred pre-pro, look into the
Integra DHC 9.9. This thing can do pretty much anything you can ask off a pre-pro with documented reference quality. It also provides excellent video processing via HQV Reon and has Audessy MultEQ XT for the audio side.
Not just the Audyssey XT, but also Pro capability. How else would Jeff Permanian be able to do a pro cal on rmk's system?

Ok, sure he has the 9.8...
Problem is that for most people, you are out at least another $500, if not more, and that's if they're willing.
Anyhoo, I agree with the above posters in getting a dedicated pre/pro. At that budget you can afford to. You're not limited to the economies of scale.
Also look at Anthem D2v somewhat past budget, and the awaited Outlaw 997 somewhat below it.