I've been watching jojos bizarre adventure, I've finished all parts of teh anime so now I'm on part 5 reading the manga, I haven't been so drawn in by a manga/anime since One Piece
The only manga I'm following right now are One-Punch Man and Keijo. Actually, @A Jewel of Rarity, Keijo seems right up your alley. I knew it would be good from a few minutes into the first episode. It was the burning rainbow that did it for me. I mean, come on. How much pure destructive potential is this little girl packing if she can set fire to light itself?
My first exposure to One Piece was the 4Kids version. It kinda left a bad taste in my mouth, so I've never really pursued the actual series.
Well in the case of One Peice and Naruto, the Manga are better. Naruto started getting bad at the end either way.
It was okay at the beginning, but then it kind became all about Sasuke, and well it seemed to drag on. One Piece on the other hand feels like it could go on forever and not get stale.