Manga Suggestions

Hmm, well I dunno how much some of these fit in with your tastes, but here's a few that might be worth checking out for you:

әnígmә (Psychological Action/Drama)
Angel Densetsu (Slice of Life w/ some fighting)
Aiki (Fighting + Ecchi mostly)
Akumetsu (Philosophical Drama? I guess w/ Heavy Action)
Change 123 (Fighting + Ecchi mostly)
Dengeki Daisy (Romance w/ Mystery)
Gokusen (Highschool Teacher + Yakuza)
Hajimete No Aku (Wacky Slice of Life)
Lost+Brain (Psychological Action/Drama?)
Yureka (Fantasy Fighting)

My descriptions are probably pretty poor, but I'd say go, read a few chapters and see if any of it strikes your fancy.