I say go for it. Vintage equipment can sound fantastic. It also tends to appreciate in value and almost always looks cool. I have a Marantz 2285b reciever that i had recapped and it sounds fantastic. It's firmly on the warm side of neutral but you can listen to it all day. My PrimaLuna HP integrated is much more detailed and has much better imaging but i like them both equally.
Top vintage receivers vs. modern high-end equipment
I am considering pairing an old amplification system to my JBL Paragon -- the idea of getting an all vintage system is very attractive to me. Among other things, I am looking into classics such as the Pioneer 1980 receiver or the Marantz 2600. Does anyone have direct experience in comparing this kind of equipment (very high-end but 40 years ago) to current high-end equipment, imagine an integrated Pass Lab amplifier? How do they stack up? Thank you.