I have not!That said, I did get a chance a while back to audition some "high end" equipement which included a SE 845, SE EL34, PP EL34. The amp that caught my attention was the PP EL34. I really enjoyed it. It could have been a system syngery thing, but I did have time to sort that out. Sooo, I've been looking at a lot of PP designs.
I've been looking at the Nutshell HiFi site, Bruce Rosenblitz site, Vacuumstate Electronics, Gary Pimm, as well as the sites listed earlier.
Nutshell Hifi favors PP DHT's. The others are into PP Pentodes and OTL's. I have favor PP Pentodes due to what I HAVE heard, which isn't much. Beside I figure you get more bangh for the buck here on the "dark side." So my earlier post.
What about Cris Brady's 6AU6 style SE input, autoformer coupled to a PP 6V6/6L6 output stage. The OP points would need to be wporked out, but it should hold its own with ALL comers.
Using Heyboer power tranies, and Electra-Print autoformer/output iron should be cost effective.
Joe