Thanks, Schubert. Re "Nessun Dorma," considered by many to be Pavarotti's signature aria, I have performances by both gentlemen in various compilation CDs. And while to me both performances are thrilling, it's remarkable how different they are. And like you I would have to say that Björling's is the more special.
What a shame that Björling died at 49, and that Luciano is no longer with us either.
Best regards,
-- Al