Definitely Gore. Although it appears that Hyde is going to cut into Gore's carries, Gore is still the clear #1 in SF. Gore got 16 carries compared to Hyde's 7 vs Dallas. Chicago's run D is awful and presents a great matchup.
Moreno and Lamar Miller are probably going to be 50/50 for carries until 1 just totally separates themselves from the other. While the Buffalo matchup is favorable one, you just never know what you are going to get from a RB that has to split carries.
I like Gore as well, but wouldn't be surprised if Moreno out scores him again. While neither will catch that many balls out of the backfield, I could see Moreno having a couple more targets than Gore in the passing game which may make a difference in your PPR league. Even then, Chicago's defense is the better matchup for Gore.
The Cowboys are the worst defense in the NFL and Gore did not do that much against them. Moreno is going to get more touches, and he has a pretty good matchup too.