At first glance, Alexander...he's the man for sure
, and the defenses he plays are still going to be pretty weak, especially inter-division. They aren't going to stop giving him the rock for those 1-3 yard TD's.
Only scary thing will be if they have the division locked up by week 16, but you have to go with the guy who has the best chance to dominate every week. Playing ARZ, STL, and SF defense twice each makes a nice start.