JMM even though I believe Pacquiao will beat him but he has the most chance out of the rest mentioned, Guzman has a pretty decent chance as well.
Take away the first round and Marquez already turned the trick. I had Pacman winning the first fight by 1 point. I thought Marquez neutralized him for the rest of the fight and could have arguably gotten the nod.
Edwin Valero in my opinion. Valero hits harder than Pacquiao, and I feel is more than just a puncher, like a lot of people feel he is. Valero may have been just a reckless puncher when a while ago, but he's improved as a boxer. I badly want to see Pacquiao vs Valero. That would be nothing but fireworks all the way. Gotta happen in 2008 if both don't lose in the meantime?
I pick Joan Guzman...while JMM-Pac II if they fight this year or if they fought last year PacMan will beat Marquez inside 7 rounds by K.O/TKO.