I agree with Penny and Deb (and yourself) on this as a fave, and I think I prefer that the balloon does NOT cover the sun, thereby avoiding a possible cliche. However, you must steel yourself for those comments that think it is an error! :-D
I prefer this one for the same reason you do - it has more life, more flow, more movement. Even reminds me a bit of a much younger Aidan (Tim's boy). I also quite like the subdued color - rich and warm without being overdone.
Oh I really really like this one!!! The composition of the sihouette with all the light behind him (especially including the light shining through the balloon) is perfect! And I like the gold and blue and the way they reflect onto the sand.