Good questions man I think these are both a coin toss. I looked up the projections on two fantasy expert sites and were both neck in neck. MJD looked pretty darn good but didnt get that many carries and he faces the Jets but is a better athlete than Benson. Fitz looked great last week but you cant really expect that again altho the Rams secondary is a mess...
MJD is going to get more carries, he's a double threat as well. Benson is good and I like his matchup. It's tough. I would go MJD, the stud. As for Eli and Fitz? Toss up, probably depends on how much interceptions are penalized for you. If it's really low, Eli seems okay, but I like Fitz in all Formats.