Once again, Smalling + 1 is the way forward. As I've said before he mirrors Rio in his ability to spot danger and position himself, but lacks the ability to calmly bring the ball out from the back. In that sense he's similar to Vidic. On the otherhand, Jones isn't as tactically aware as Smalling but is a no-nonsense all action defender like Vida, but with the ball playing ability of Rio. I'm sure if these two become injury free for a prolonged period and play together, they'll form a great partnership.