#1: My fav is V3, personally I love the negative space. I just like the tag. Good job. #2: Again, a really nice tag. V2 is my fav. #3: Now, I'm not sure what to think about this one. It looks like a cloud stock with a render with a few smudges.
#4 and #5 are really hot. #6 is lolwutcrap D: 1-3 pretty good but not great I find the bg under contrasted