I've been using a Classe CA-D200 for the last 7 years. Since then, I have been led to believe that the technology cannot compete with A or A/B designed amplifiers, but I figured I'd just use the Classe amp as a "stop gap" until I found something I could afford and enjoy in a beefier class A amp. Since then I've tried a Parasound A21+, a McIntosh MC275, and even a Mark Levinson NO534. I ran each for about two weeks each, and while I couldn't afford the Levinson piece without also hiring a divorce lawyer, I found I preferred the sound of the Classe amp every time overall. The Mc amp was great for loud rock and roll, crunchy guitars and gut wrenching bass, but it seemed pretty grainy for classical, or any piano. The Parasound was great for bass and had very nice extended treble, but the midrange sounded "boxy" and a little muddy. The Levinson was the biggest surprise - it just sounded flat and uninvolving regardless of volume level. There wasn't much written about the CA-D200 when it hit the market, possibly because Classe was undergoing a change of the guard (Manufacturer head Dave Nauber, a wonderful guy and high end audio advocate, moved to T+A). I have a decidedly mid-fi system overall but I have really enjoyed and will likely just keep using the Classe until something "goes wrong".
And before anyone chastises me for it, I will post my system today. :)