That's the thing, I'm not sure yet, the ending is going to make or break the show for me. You might as well try it out, it's far from being awful (and looks gorgeous) but I'm still undecided about the show. :\
Hmmm, I like No.6 alright but I like the novel translations more so I'm a bit biased. It's noitaminA, science fiction dystopia with a little bit of BL (the only cross-dressing is that one of the characters, Nezumi, has a job as an actor where he apparently plays female roles, despite having a pretty damn low voice).
It's from No.6, ironcially I have found yet another noitaminA show where one of the male characters occasionally cross-dresses (although this time it's because the character is an actor, although why a character with such a low voice is playing female roles I have no idea ).