totally depends on the instrument, builder, wood, etc. I was shopping for a Gibson L5 many years ago and looked at several old ones, trying to avoid the $12000 price tag of a new, custom order. I was surprised that none of them seemed to be what I expected a vintage guitar to be as far as tonal character, wood resonance, etc...nothing like a vintage acoustic for example. And a couple of the vintage L5's were pretty much the equivalent of dead firewood. I passed on all of them, even the one that had an asking price of only $1500, which was the deadest wood of all. With another comparison, though, my NYC Sadowsky P was stellar from birth and set the standard for all others to follow...new or used, worn or vintage. But like said, nostalgia comes at a price.
I feel the same way about a lot of the vintage Martin guitars I have played. I got so excited that they were 60s and Brazilian rosewood and all that. Honestly, most of them sounded pretty average. Same goes for many 60s strats I have played. It is cool that they are old, I'll admit that. However, old does not equal good in many cases.
Anyone in SoCal have a 70s fender bass? I would love to play one... Can't recall ever playing one
I got a Sadowsky for the same reason bigbass did. It is stellar from the get-go.