Recommend :)

Idk if it fits in that category but "An uncomfortable truth" is pretty good

And also exciting, interesting, complex and such? How about "Acid Town"? If you don't already know it. The mangaka generally has a knack for tearjerkers.

You can even get it everywhere for about 7 € or so.

Or right here ...

http://www.mangago.me/read-manga/acid_town/

Or here ... Banana Fish?

http://www.mangago.me/read-manga/banana_fish/

deCEMBER RAINNNNNNN