Stardust is my least favorite arc. Although the tone of the OVAs is more serious, I find the condensed nature of at least the second half [Star Wars-esque release, "second half" being released before "first half"; the part released earlier is the one I'm talking about] to work wonders on the pacing. And the end Dio fight is incredible for a 90s release, hell even for contemporary standards. Kon was a boss.
JoJo Part 4 is easily the best arc so far. It's a lot of Stand if the week still, but the powers are coolet and characters much better.
I just can't see myself watching most of the lineup. Shonen occasionally hits the mark, but I don't think they're often very good narratively and that's what's most important to me.