Atmasphere amps trustable?

I believe that any amp if pissed off by cat can get angry and eat that little bastard!

Tubes are retro of course from the beginning.
They're noisy, require LOTS of wall power; generate LOTS of heat(especially OTL ones!) and LOTS of distortion(even considering even order ones) making the playback far from real. Very often the soundstage will seem like sounds from far away. Also as tubes about to become bad, these unpleasant effects multimultiply including some unwanted echo, RF or EM interference or microphony. Tube components indeed sound different, but they're just toys and nothing serious no matter of reputation or credibility of one or another manufacturer. 

Nah, I'm just another casual dude who wants to listen to music and not play with toys.

So OTL amps are like Ferrari: fast, powerful, maneuverable, but require very high maintenance to preserve an original condition due to excessive heat figures. 
I still prefer comfortable and low-maintenance Subaru over fast and powerful Ferrari.