tzh21yEasy answer. Some of the "older turntables" offer reference caliber analog playback. Plain and Simple.
I have to ask what is the fascination with these older turntables?
A kind bit of advise, garner more experience ie. real life listening in top notch listening environments, with various properly setup and conceived "older" turntables. I think you might be in for a real shock.
Not all that is "newer" is good - better and not all that is "older" is bad - worse. This is especially true in high end audio, not in disposable mainstream big box store consumer electronics. Do your own homework, and educate yourself. I speak from my past humbling experiences, and I used to believe the same.