This may be an odd to recommend, but if you're into superheroes and have an open mind, Sailor Moon might be something you want to try. I mean, okay, it's no secret who it's made and marketed for or anything. But it's not quite as sappy as most envision it to be (though the theme of love is heavy). It's pretty fascinating to me, though, because it does share a lot of tropes and ideas that American comic superheroes have, but made from a feminine perspective. Might not be your cup of tea, but it might interest you.
Another manga worth trying would be FLCL, too. It's hard to gauge exactly how much it fits into genres, but it's wild as all hell. You might want to look up the show it's based on, too. Good thing about it is that it's short. It was originally released as two volumes, but Dark Horse re-released it in one single edition for like $20. So, it's not the long investment that manga sometimes entails. The art is pretty out there, though. I didn't have much trouble, but I know others found it difficult to follow.