I may be a bit biased, but Fisher tube gear is up there with the best from that era. HH Scott would have been a major competitor. The transformers are exceptional quality, and the components were top notch. As far as sound, I think Fisher can run with H/K and even McIntosh. Yeah, I just said that. But honestly, you won't be disappointed with vintage Fisher tube equipment. Don't let the Studio Standard stuff affect your view, it's totally unrelated to Avery Fisher's original company. And it's easy to find most Fisher gear, especially if you want to go the receiver route. A 500C would be an ideal place to start.