I was in this same predicament over the last month, and decided SW Pro. Admittedly, the theme resonates with me more than the other two, but there was something more to it as well. The more I played it on location, the more I appreciated the little nuances about it. Yes, it isn't as feature packed as the other 2 games, but the difficulty level was just right for me, the challenges felt rewarding, and the rules actually make perfect sense the more you play it.

Aerosmith was super fun and easy to understand, has the best LCD integration, but... it's Aerosmith.

Ghostbusters, like everyone says, is the best looking of the 3, but I never had that "one more game" feeling with it. I almost felt like I was forcing myself to play it sometimes to try to find where the joy is in this game.