I absolutely love my Bel Canto ref 500Ms. I have had them for four years or so, having graduated from powerful older solid state amps (b&k and adcom) . I've always been happier with more, rather than less power. Anyway, the class d bel cantos are wonderful--warm and musical and I haven't grown tired of them at all. In your price range, the newer Ref 600Ms are supposed to be even better. Red the reviews.
best of luck,
tom
best of luck,
tom