I'm currently watching F/SN, Kekkai Sensen, and Durarara, and I like them all so much I can't decide which I like more. I'd probably place F/SN just above Kekkai Sensen just because I LOVE action anime where the protagonist is at a clear disadvantage (Shirou, at least until the past couple of episodes) but overcomes that disadvantage due to their sheer amount of badassery. Durarara is probably slightly above F/SN, especially after the episode I just watched where it basically broke me.

Durarara spoilers:
Spoiler:

The episode where we find out who the Saika "Mother" is, but it turns out Sunohara has the real original Saika. I was so mad I didn't notice the connection between the saika "mother"s name (which I can't remember) and the reporters name. That she was the reporters daughter.


As for what you were saying about F/SN Lancer, F/SN Lancer is like, awesome. I haven't seen F/Z yet though so I can't say whether or not F/Z Lancer is more awesome.