1st one looks good the face in the background gives it the ommph, and is blended well.
2nd All it really is, is text and a screen shot but still looks good
3rd is well blended except for the render in teh middle u should use the lasso or sumthing to blend it ^^, then it will look suberb.
4th looks nice gives me the feeling of whats the word... umm umm Nasalga i think it is (If I spelt it right) and is blended very well (the love hearts bring it together).
I chose the third one. That one was definitley a favorite of mine because there was so much detail and brushwork added into it. The text was also good, but i think there was a lttle too much. Still, i like the third one the best.
The last one is by far the best. It was made with the most careful procedures. The third one is also good, but it looks sloppy. =/ I believe it could have been done better.