I guess it would have to be Jones. That only makes sense, I guess, since Driver is getting older. He's also been dinged up the last few games this season.
The only problem I see with Jones is his inconsistency. I think he doesn't know what's going on in the offense at times and there are other times when he seems not to be focused on completely a play perfectly.
Contrast this to Driver, Mr. Dependable. I'm not saying that this means Driver is still better than Jones, I think Jones is superior in a lot of ways. However, if Jones could find some of the dependability that Driver has had in his career I think Jones could even rise to #1 on the list.