Out of those 3, I'd probably go with Ricky Williams.
Wells has the match up advantage, but he's done nothing and doesn't look like he'll get many opportunities anyway.
Williams will probably outplay Ronnie Brown, so go with him.
I do like Tim Hightower better than all 3 of them, though. Or even James Starks or Tashard Choice (if Barber isn't back), if they are available.