Which fighter had the best upper cut?

I dont know about the best, I only know more modern examples but Toney threw really nice ones on the inside with both hands. I also thought Trinidad had some pretty satisfying uppercuts with concussion force. My favorite modern example is Zab Judah though. I know he often threw it when in desperation but it was always well timed and aesthetically pleasing.

 

Circle and connect , GGGs uppercuts on Canelo were the best shots in the fight. GGG got robbed

 

I watched Pone Kingpetch vs Fighting Harada the other day. Pone repeatedly a beauty that managed to slow down the always-on-the-attack Harada a little.