Saquon. He has no no one else to share the load with like Kamara does with Murray. On the downside, defenses will load up to stop Barkley because he is basically the entire offense. But, like the poster above stated, he will have much more volume to offset that as he is likely to break a few big plays every game with his speed, strength, and amount of touches he'll get. I think Kamara will average yards per rush/reception and be the better real life player, but I'd take Barkley over him in fantasy.