I wasn't questioning the quality of Jensen transformers. I did test some years ago but I wouldn't use them because there were better performing transformers made within Europe. Jensen are American made and I try to use UK and EU manufactured parts where ever I can, unless something special appears. FWIW there aren't many transformers I haven't tried or tested over the years.
Fair enough.
So what do you consider the pinnacle of SUT's? e.g. Lundahl, Slagle, Audionote, Kondo, etc. Or have you a particular 'favourite' and what is that based on, measurements or subjective listening?