I have heard the D-200's and the S300 amps and both are excellent. However, the D-200's would clip when an electrical appliance would kick on in my house and I never had that happen with my Bel canto amps. I am currently running Bel Canto Ref 1000's for my front speakers, a S300 bi-amping my center channel, and another S300 powering my rear speakers. The S300 is more compact, sounds great, and never gets hot.
