I like the Day/Johnson/Stenson group myself. Day is playing pretty well, though Johnson shot an 80 in the first round at Houston and Stenson, they say, has never faired well at Augusta. Still, those are three guys that bear watching.
I'm not convinced Phil is going to do all that well this year at The Masters. His play has been so inconsistent this year, it doesn't bode well for a favorable result.
My personal favorite is Matt Kucher. I know he's blown sure wins two weeks in a row, but he's playing so well that if he's learned anything from his recent experiences, he should do very well.
Watch out for McElroy. He was hot last Sunday and could have won if he hadn't played so poorly on Thu/Fri.
FYI: All groups are the same on Thursdays and Fridays in PGA events. They just flip the starting time order. If you went early on Thursday, you go later on Friday. If you started on the 10th tee on Thursday, you start on the first tee on Friday.