I'll vote Rice. I just think the guy is in must start territory with the way he's piling up yardage lately. Even when he doesn't run well, he makes up for it with a half a hundred through the air.
All three of those guys are awfully tough to sit, frankly, but I'd actually think about maybe even sitting CJ. He's been completely boom or bust this year, and while it's led to solid overall numbers, he's actually gone bust more than you want from a top back.
However you end up going, it's an enviable dilemma to have talent like that -- think about trading to upgrade elsewhere on your team.
Good luck however it turns out!