3rd is my fav. love this text. 4th have missed something and lens flare isn't in my style, but I love this coloristic boom. 2nd - nice clipping mask. nice sigs though.
I love the first. On the fifth, I would either get rid of the text or slightly increase the size. It doesn't work well being that small - it looks like it is meant to be a design, not text. One the second, I would work on the blending. The glow seems a bit strange. Overall though, nice stuff.