I would take Luck this weekend. Peyton is rusty and the Texans look pretty damn good on both sides of the ball this year. They should be able to sustain drives which will eat up the clock giving Peyton less opportunities. Jacksonville sucks and I believe that Luck will get better with each game. I know that Peyton is more consistent right now and he would probably be the safe play, but I feel like Luck will have an easier time against the Jacksonville defense.