What is the best SS Amp and Pre given the trends?

I currently have an active Linn system (Klouts, Kairn, Kabers) and want to upgrade. I originally chose Linn because of it being more musical verses sterile sounding and it's small foot print. In looking at upgrade choices, I've been surprised about how the once frowned upon Class D amps are suddenly getting noticed (Nuforce, Channel Island, Bel Canto). I'd like to get better sound stage, image, power capability, and detail without harshness or having to going the tube route. I've read mixed reviews on the Ayre MX-R's, so I'd appreciate forum members thoughts on current market choices and considerations for putting together a new system.