The original fighting game just fucking rules. Every single character is insanely fun to play as, and it got me to like a ton of the Stands that I never did otherwise (namely, Hol Horse's). My favourite character is probably Jotaro, but they're all gorgeously animated and move wonderfully. Great show! That was back when Capcom gave a hooey.
I also played the SNES RPG for like an hour or so. It's OK, but pretty simple... I don't really think Jojo is a series that lends itself well to the RPG format.
When I was a teenager, I desperately wanted to play the PS3 fighting game, but I didn't own a system it was on.

One day, I'll buy the enhanced port for PS4.
Has anyone played that "Eyes of Heaven" arena brawler they did as a follow-up to the modern fighting game? Was that good? I never bought it because it looked very generic and I didn't like the team-up mechanic.