Amps/Preamps for Revel Studios

I just purchased a pair of Revel Studios. I would like some suggestions of new/used amps and preamps that will be a good match. I'm interested in amps first, and would like to spend under $5000 for one. I'm considering the Bryston 7b monoblocks, Proceed HP2 and laterally biamp, or used Levinson, but any other suggestions would be helpful. Thanks for your views and experiences.