This is a tough one. I would say Washington this week. Rice gets carries, but isn't likely to score. Washington has started to get more touches and I think could do decent this weekend. I think ultimately you would get close to the same production out of either, but I would personally go with Leon.
I would think that the Jets would try to run the ball as much as they can to keep Brees off the field, unless they just get down big quickly. McGahee seems to get all the goal line work, so I think I like Washington here.