I hope I don't upset Adcom fans, but I have to be honest, I did not like my Adcom GTP-400 / GFA-545 at all. Bought them brand new in the late 80's / early 90's -- and it was a ton of money for me at the time -- and I never like the way it sounded (using with Large Advents back then). I had an SX-3700 receiver before the Adcom, which was probably 1/5th the price of the Adcom separates, and the Pioneer sounded a lot better. While I wouldn't recommend you swear off anything based upon one person's opinion, my personal recommendation is "not Adcom".
It's impossible to provide a suggestion without more info (e.g. what inputs do you need (since old vintage components are pretty limited on inputs), what "look" you prefer, what era you prefer, what power you need, do you need phono input, what music you will use it with, etc.)