Tough one to call but I have just edged towards Pavlik probably because he is undefeated. But when I think about it I can't help but remember his first fight with Taylor. I picked Taylor before the fight and early on I thought to myself that Pavlik was showing he didn't belong in there with Taylor and had Taylor had the gas to finish him we wouldn't even be talking about this now I don't think.
But he didn't and I think Pavlik learned more in them early rounds of that fight than he has in his whole career and it made him a far better boxer.
Kess is a good solid fighter though and I would probably expect him to maybe beat Calzaghe in a rematch should it happen but I just sway towards Pavlik here.