Meh -
For my money, it’s Sammy Davis Jr and Carmen McRae; tons of character and comes across like a number from a musical, which is AFIAC the best way to interpret a song like that.
If you try to treat that song like a normal duet, it dies. . .
I really like the song. I just got Lady Antebellum version this year.
I also like the version from “All I Want for Christmas”. Lauren Bacall does a duet with a very young Thora Birch. Could not find a link:(