It's tough, i'm having trouble choosing.
1. One guy, Miguel Cotto, looked better in losing to Mayweather and Trout than Kirkland and Angulo looked in winning their last fights.
2. Kirkland is never in a boring fight[except for the Molina fight which was not his fault] and his power is always there to change things.
3. Angulo gets hit a lot, he's huge and powerful, but seemed to get buckled a couple of times by that guy Silva.
I'd be happy with any of these 3.