Nicktheknife,
As several have mentioned, listen and borrow if you can. I've heard two Class D amps that I thought had heart and soul, and would definitely audition if/when I consider combining to an integrated; Gato and Aavik. The Gato is around $5,000 and unfortunately the Aavik is well north of that. I have never heard them in my system, but would like the chance at some point