I started reading JJBA about a week ago, I'm around chapter 94 now (Caesar just died; wtf man aughhh jojo didn't even get to say goodbye god)
Phantom Blood was pretty amateur (aside from the kickass art). I liked it more when it was just Dio being a dick to Jonathan; when it went into the supernatural genre, that's when things kinda seemed messy. There even seemed to be a deus ex machina somewhere, I think it was when Dio used eye lasers for no reason other than the author deciding why not.
Battle Tendency is all kinds of great, though. A globetrotting adventure, the archetypal cool anti-hero, villains with honor - I'd love to see the fights animated.
The art style between this and FOTNS looks so similar...are there any others that look similar?