Story: Very easy to pick up, as you would expect with any shonen. But as a shonen, it is quite generic. Well, Phantom Blood was written around the time of Dragonball, so I'm not too surprised. I do like the concept of ripple energy though. Also, every character has a habit of explaining everything, every move, every object, every attack in detail, so it might get a tad annoying (though I don't mind it).
Art: Araki's stronest point. JoJo is beyond famous for its unique art style and fabulous extravagent poses. After watching this show you will be gay for Dio, just like everyone else.
Sound: Opening and ending are godlike. Soundtrack is not great, but not too bad either. It doesn't stand out like Horizon in the Middle of Nowhere, soul soothing like Yosuga no Sora or hype like Gurren Lagann. Okitsu does a pretty good job of playing Johnathan considering he mainly did supporting roles in anime.
Character: Generic. Villan is evil because 'I am evil'. Main character is gentleman. Sidekick is mr. explanation. But like I said earlier, this was written during the time of dragonball hype.
