I auditioned a ETS SE for a weekend and came away less than thrilled. The sound was like a warm misty summer morning. It was a great effect, but it wears on you. I just could not get around the slower, more edge intangled, heavy and less detailed soundstage. And yes, my sample was noisy, too. At the end of the session, the left channel tube started scratching and sizzeling bringing the audition to a standstill.
So, the unit clearly wasn't 100% prior to the outright tube failure, but it had a LONG way to go to be what I would be happy with long term. I used Dynaudio C4's and they are pretty unforgiving if you have a unit that lacks clarity in presentation. Switching back to my XP-10 was a HUGE change in detail and speed and maybe too much, even. But, the two units live at opposite ends of the sound spectrum. I'm still looking for a middle ground pre-amp (possibly a RLD-1 with a 2012 series platinum SMc mod).
I'm not against tubes at this point, I just haven't heard the tube magic yet that would make me accept the more temporary performance peak of tubes. Tubes just change more and faster than SS. The newer single tube per channel SS (I think J-FET) output tube units seem promising, though. They seem to try to manage what is good about tubes and remove the bad (poor ability to drive longer leads).