Of the two I would go with Shields. While buddy did pretty good in getting Gatti to box more, a lot of his fights seem won on game plans and Cotto's shown a habit of starting fights well and then the plan goes out the window and he winds up getting battered in the later rounds.

At least with shields, he can pick up some head movement and learn how to do his damage on the inside, circle out and not get killed by guys that fights witha faster pace. Cotto's got heart and it sounds like a good match for what Ronnie needs from his fighters.