I started out with Emotiva XPR-1 monoblocks in my home theater system. I went through a big amp search to find a good sounding amp in my budget. I tried several in my own own (ended up losing money). I also went through and listened to a ton of amps at Rocky Mountain Audio Fest. I tried Parasound JC1/A21, Bryston 7b3 monoblocks, Classe M300 all in my own system by buying these amps. None of them really gave me the sound I wanted and I ended up going back to the Emotiva XPR-1 monoblocks (which I have since rebuilt and upgraded).
The Classe M300 were the biggest disappointment. They sounded flat and sterile. The Bryston had good resolution, but just did not have enough body and oomph to keep up with the Emotiva. The Parasound appeard to be the solution, but in the end I determined the Parasound just did not have enough resolution because it rolled off the high frequencies.