Seriously, though, I see the value of GOAT questions not so much as a ranking mechanism, which can get a bit too masturbatory for me, but rather as a way of learning from colleagues about great new resources.
I agree and suggest a more effective way to get around the competitive "My guy is better than your guy" dynamic would be to ask a different question: "Who are some of your favorite classical pianists and why?"
Or, "Who are some of your favorite interpreters of Chopin Nocturnes and why?"
My 2 cents.