Vanderlei Silva, in his prime, would give Jon Jones a fit. I don't think Jones has been faced with the sort of relentless pressure that Wandy is/was capable of.
Chuck in his prime would also be a great fight with Jones. Jones hasn't been touched by anyone with the amazing power that Chuck had.
"He's just a regular guy, just another guy, we both weigh the same......but he finds a way to win, and I admire it." - Chael Sonnen 07/07/12