That's a wide range. ^_^  I tend more toward the 
shoujo and dark shoujo genres, and since you seem 
to like that as well I'd recommend Paradise Kiss, 
HanaKimi, and DNAngel. If you want to try some 
manwha for a somewhat different feel, I 
*definitely* recommend Model.

And... anything CLAMP.  Heh.  Just as a general 
thing.  Tsubasa is the new love of my life. ^_^