Van Alstine Synergy amps: Are they quality sound?

I bought myself a new AVA Synergy 450 for XMAS, it much outclassed the Odyssey amp I was using, very dynamic and enables me to hear every line in the Symphonic music I primarily listen to. My biggest complaint is cheap plastic speaker terminals placed in tight space pretty much limits you to banana plugs.
To be honest one reason I bought it was I live an hour away from AVA so no shipping required if I do need service.
I would never buy an amp rated at 4 ohms, which his cheapest model is as Maggies will smoke them.
Reviews are a function of advertising in the mags that review, AVA is running a few adds lately,so getting a few reviews, I noticed his FET 600 rated top of class by TAS.
Frank himself has said Synergy 450 sounds as good as that in many setups.

They do not get more reviews and evaluation because they do not spend the required amount for advertising. The bigger your marketing and advertising budget, the more reviews and evaluations you get.

To Schubert. Thanks for replying the information is very helpful. However, are not most amps power rated at BOTH 8ohms and 4ohms???? The latter impedance usually doubling the power