What is the "sound" dif. between a Joule -Elctra OTL and a SET amp??

Thaluza, 
I appreciate your detailed and very insightful comments. If interesting that you mention piano, we have one in our home as well. Surprisingly the 8 watt Frankenstein reproduced the most realistic piano sound I've ever heard in my system. Actually every instrument is reproduced more realistically than with previous owned amplifiers.  Based on your description I believe that I'd really enjoy the Joule OTL as much as you did. Two different amplifiers but both with many desirable attributes. 
Charles, 

Hi Larryi,
The warmer and fuller sound of the Joule OTL you describe relative to other OTLs makes sense to me. I've only heard the Berning and the Atma-Sphere OTLs  and they were a lean and clean type presentation. So the Joule OTL goes in a different direction. 
Charles, 

Is Joule-Electra still in business?

Hi Charles 1 dad,

I too find both the Atmasphere and Berning to be somewhat on the lean side, but, I like the liveliness of the sound they deliver.  While I did not make any sort of direct comparison of the Joules with either OTL, I did hear the Joules against another OTL (custom-made, non-commercial amps) and the Joules were slightly warmer sounding, but, also not quite as dynamic and lively; so, at least in this case, there was some tradeoff involved.  I think one can get quite lively sound from other tube topologies, like SET amps, but, the big limitation there is that the best sounding SET amps have a very limited output and only work well with a few speakers; OTLs can be made to work with a wider range of speakers.  

The BIG Joule OTL I heard also had a problem which caused it to intermittently put out a HUGE, window rattling pop.  This turned out to be caused by bad tube sockets which had to be replaced.  That is a very BIG job on amps with that many tubes.  I know a few people who had, in my view, a bit more reliability issues with their OTLs than I would be comfortable with having in my own system.  I have had zero reliability issues with my Audio Note Kageki or my pushpull Western Electric 133 amp, but, I just might be lucky (so far).

Larryi,
I'd be happy if Fluffers can compare his Wyetech 211 SET  with the Joule  OTL. It would be very interesting to read his listening impressions. I have no doubt that these two amplifiers provide rather different sonic presentations. Wyetech has an excellent reputation for sound quality. 
Charles,