I wanted to believe... but all I can say is my take on class D amps is that their performance must be highly dependent on the system they're plugged into. I had read all the glowing reviews of the Bel Canto Ref 1000s, and sprung for a pair and was sorely disappointed. I tried them on my nearfield towers and they sounded weak and thin -- all treble and no midrange at all. Then I tried them on the subs, and it was the same story -- extremely weak bass response. I A-B'd them with several other amps I had on hand, and they were dramatically worse than all of them (a Classe 10, Proceed HPA-2, and a 300B SET).
A friend with an electronics background offered a theory on why they didn't work for me -- I'm not sure whether it's true or not, but I'll offer it here to see if you guys have any thoughts on it... He said that the performance of switching amps like the Ref 1000s are highly dependent on their ability to draw current from the wall. If the power lines can't deliver the current needed when the amps demand it, they completely fail to deliver the signal. I don't know if that was the case here at my place, but they definitely didn't work for me.
The Bel Cantos taught me a valuable lesson -- you can't just go by reviews. For the forseeable future, I'm sticking with amps with big capacitors.