Don't know whether this has been talked about before, but.......
In my case, I'd say Alexis Arguello. This classy Nicaraguan boxer-puncher ATG twice defeated a local favorite, Alfredo Escalera, in classic bouts. Yet he won over the Puerto Rican boxing fans with his class and grace in and out of the ring.
He's one of my all-time favorites.
Was devastated when he suffered those two nasty KO losses to Aaron Pryor.
I was also a big Sugar Ray fan, even though he beat one of our ATG's in Wilfredo Benitez in a classic match between master boxers.
Duran I didn't care for at first, as I viewed him as not been a good sportsman. He beat our Esteban deJesus in their rubber match and I was devastated. But Roberto kind of grew on me as his career went on. One of the best of all time.
I was a fan of Pacquiao before he beat Miguel Cotto... and became even more of a fan when he crushed Margacheato's eye socket.