I started JoJo with this anime run, because I didn't want to read the manga and the Stardust Crusaders OVA didn't seem like a good place to start.
The first 3 episodes of arc 1 is maybe the best anime I've ever seen, including Arc 3. It would make an absurdly good OVA. The rest of the show pales in comparison. I will say that the rest of Arc 1 is a sharp drop in quality (cuz it just apes HnK without standing on its own ideas), and Arc 2 is a jump back up. I hear the manga version of Arc 1 is really rough and the 2012 anime adaptation really cleaned it up, but the start is really great.