I'll update mine again:
These are the manga I've bought, i've also got numerous scanlations...
Negima: 1-13
Love Hina: 1-14
A.I. Love You: 1-4
Azumanga Daioh: 1-4
Fruits Basket: 1-5+14
Rurouni Kenshin: 1-6
Dragon Ball: 1-10
One Piece: 1-9
Battle Vixens/Ikki Tousen: 1-4
The Law of Ueki: 1-5
Chobits: 1-3
Card Captor Sakura: 1
MÄR: 1-9
Yotsuba: 1-3
Gunslinger Girl: 1-3
Bt'X: 1-10 (really crap I think, bought it long ago
)
Hellsing: 1-2
R.O.D: 1-3