I'd have to say Kevin Hayes is one of the good guys in this business and is always a pleasure to deal with. I have enjoyed my VAC amps greatly and they have worked extremely well with my Audiokinesis Jazz Module and Tonian Labs TL-D1 speakers. The Golden Dragon tubes that I received from VAC have been just fine and I run the amps a good 5 hours a day on average since I listen to KUNV on my FM tuner while working. I have enough experience to know that not every manufacturer is perfect (including Audio Research), and I'm sure VAC has its share of unhappy customers, but I'm not one of them.
You can make the argument that monoblocks as a rule will be better than stereo amps, but in this hobby I have quite surprisingly found a number of exceptions to the standards. One of which is that stereo amps can sound every bit as good as monoblocks. If that makes me inexperienced then I can accept that because the end result is I'm enjoying whatever experience I do have.