Is MPD Psycho still going? I use to liek that manga a lot (and one of the most disturbing mangas I've read), though 'Sky High' can be quite freaky as well. The ones I'm still buying are:
Deathnote
School Rumble
Samurai Deeper Kyo
Air Gear
D-Gray man
And a crazy soccer manga called Sasanaki (was sasamake for the first 5 vols)