I can see why you love them... cause I LOVE THEM TOO. <3 They are gorgeous! Such vibrant colors and you use textures really well. Some of these (like Untruth and AC3) have a lovely sense of insanity, which really fits the season.

My favorites are BFF (the scene is aaww and you blended the two images perfectly, it's really just... wow. I'm snagging), Own Theme (what a great idea, and it looks lovely too), Dark (it looks very powerful, almost haunting), and the whole category. #5 is very artistic, and they all just look great.