"Vintage" is an odd term with the rate at which things become obsolete these days. A 10 year old preowned receiver can sell for less than budget prices and still be better (and cheaper) than vintage, just for not having fouled analog controls to deal with and to have been born in a time were measuring methods at which they're rated at are likely more thorough and accurate.
It's also possible to get audiophile quality sound from some current budget electronics and speakers, too. Budget stuff now is certainly better (sounding, at least) than the same economic class of budget stuff 30-40 years ago.
After messing with both vintage and modern electronics simultaneously in recent years, I've come to lose interest in the now overpriced collectors item realm of vintage equipment. I just quietly buy the mid class/flagships of 10-20 years ago for what amounts to remarkable value/performance ratios comparatively and often cheaper than newer, lesser quality budget offerings.
I consider the speakers the legacy component of my system that I will keep the longest. What I power them with, not so much.
When thinking of budget speakers, I look on local sales outlets for used first. I can usually find something I would want to keep longer and that will perform better than current budget models for not much more money, or perhaps even less.
