Well, I can't speak for all Class D amps out there, but if you're on a budget (sort of), I had the PS Audio M1200 monoblocks in my high-end system (Wilson Audio DAW's, MSB Reference DAC, etc..). The excellent sound I was getting out of these little amps was amazing! For the money, I would put those amps up against many overpriced amps on the market.
I would also guess that Molo Mola makes one hell of a Class D AMP if their DAC is any indication!

