What is the best OTL out there?

I have owned Joule (VZN-80), Atma (M-60), and Berning (ZH-270), but not all at the same time. Tried running the Berning source direct and it did not make it for me. Had the Joule and Atma at the same time and both are excellent. In the system I had at the time, for my taste, I preferred the Atma. Given the current status of Joule as a company, I'd agree w Brf.

Atma-Sphere would probably be my first choice. Ralph is constantly posting on forums trying his best to help people. The vast majority of them don't even own any of his products. For me personally, stuff like that is a huge plus.

Einstein is another good one.

ZD542 - Have to agree with your endorsement of Ralph Karsten. He's one of the most sincere and gracious people I've ever met in this industry.

I haven't heard Roger Modjeski's OTL's, but his transformer-coupled amps sure are good. Plus with the way he runs his tubes so conservatively, his OTL amps are likely to need less maintenance than other OTL's, which can be pretty expensive to keep tubed.