>>12846734>buy Yotsuba& when they release a gigantic compilation like with Azumanga Daioh.
Sorry but ADV's having trouble releasing ANY manga (see Yotsuba Vol.6 on hiatus. Permanently.) so I don't think a Yotsuba compilation will be out anytime soon.
My personal collection is mostly mango but right now I've been trying to get as many (good) light novels as possible. So:
Kino no Tabi - Vol.1 (Vol.2+ on hiatus indefinitely)
Ballad of a Shinigami - Vol.1 (2&3 on pre-order)
Full Metal Panic! - Vol.1-3 (4 on pre-order)
Gosick - Vol.1 (2 on pre-order)
Welcome to the NHK!
Banner of the Stars - Vol.1-3
Slayers - Vol.1-8
Shakugan no Shana - Vol.1-2 (Other vol. status currently unknown)
Vamp! - Vol.1 on pre-order
Other novels I plan on buying: Gun Princess, Next Door Ninja, and Haruhi Suzumiya. Should Spice & Wolf, Toradora!, or any other good sounding novels be licensed I'll pick them up as well.