I would take Blackburn because whatever he did to Joe was pure magic. There was nothing superfluous about Joe's style, just pure function. Also, Joe's style is one you're able grow into as you age. It's sustainable over the years.
I'd go with Angelo Dundee. I'd respond better to his style personally, in this hypothetical scenario. Or I'd go with Teddy Atlas if I wanted to be lectured about fear and my inner child every time we were on TV.