For one, thinker has an SR-Omega to compare the QA Float with (among others). That's pretty good reference I'd say.
IMHO implying to take apart something to pieces in order to prove (in likeliness) it's sub-engineered by someone's standards is quite slippery ground in ad hominem terms. Also, saying that someone is "talking up" a product implies dishonesty (why, is it a competition to Stax amps in any way?). It also implies products could be "talked down", which actually seems happening.
Wait... isn't the purpose of (audio) engineering to achieve good sound? Which is harder problem to solve in your opinion, mill an aluminium block with a CNC router, or to figure out how to make good sound? The latter is certainly going beyond pure engineering standards, see 100 years of Japanese DIY audio heritage for instance, with an abundance of circuits executed at astonishing quality level, and taking a lot of personal paths, without "talking down" the others. But everyone is free to choose their poison, and spend their money on either sound or engineering or both.