If I were to pick one to ride, it'd be Jessie James' bike. But style-wise, I like Gas Monkey best. Paul Sr is known for his Old-School design, but he brings modern bikes to competitions, I don't get that. Paul Jr does some great designs, but this one doesn't do it for me. It has too much negative space, and he cut the fenders WAY too high.
So GMG to win, JJ for 2nd, with Jr. 3rd, and Sr. 4th for the bad choice on forks.