Recommend me some manga, please?

I have been meaning to catch up with and expand my 망가 collection, and I wanted some options for the 다음 time I go out and buy some! ^_^
I have already read/seen as an 아니메 (these are just my main favorites):
-Yotsuba&! (manga)
-Puella Magi Madoka Magica (manga/anime)
-Toradora! (anime)
-Five Centimeters Per 초 (manga)
-Azumanga Daioh (manga)
-Nichijou (anime)

I buy my 망가 from my local Barnes and Noble (sometimes off the site, too) so if 당신 know already that the store has it in stock, that would be helpful as well. Thanks for looking!