I don't really like any of them; no render blending and obvious c4ds. However, if I must choose one, it will be #3.
I want to see the adult part of the lady 8) Hehe, jk. I like the girl a lot, but it doesn't fit the BG. Try to blend ur render a bit more in the bg. Text could be better to. I take #3 for the ya know what reason ^^