First, I love the scenario. Hot!
Second, I love how evenly matched these two are matched (well maybe not in the tits department, lol).
This should be a hot, tooth and nails traditional catfight. I think the boyfriend is a lucky man.
It was a hard choice, but I have to go with Sofia. She looks tougher to me and in better shape. but I think Stacy is going to give her a hell of a fight before its over.