Oh cripes. So hard to pick. D;
So i'll give all of those sigs a proper "CnC".
Sig 1: I like the idea of the "/facepalm" render... Hand... Thing. Thoug the hand looks kind of weird, even though I understand that it needs to be blurred-light enough to see the text.
Sig 2: Very pretty effects and wat-nat. Though i don't know why do I have to tilt my head to view at the render... :V
Sig 3: Very simple siggy with a bit of "fragments" going on. Nothing is wrong, but I don't think it's on my favorites.
Sig 4: Ooh! Very galatic! I don't know how this person does it, but I am a sucker for stars and the night sky.
Sig 5: The... Triangles are a bit weird. I don't know. But I don't think i'm not a fan. Maybe because it's a bit... Simple? Just not my cup of tea I guess. :X
Sig 6: Pretty much alot of shatters and epic-glowness going on. One of the very few sigs I would use IMO. I'm also starting to like smudge-sigs, so it has my sugar to it.
Sig 7: Another smudge-sig, but this time a bit dark and smoggy. (Unlike the colorfull one above.) As a beginner smudge-sig artist, this ain't that bad. Love the how it gradiants. /can't properly comment on smudge sigs lol @.@
So i'm in-between 2, 4, and 6. :X