I'm not going to name a best, but it was interesting for me to see Eden Atwood mentioned. Her version of "Blame It On My Youth" on her 45rpm Groove Note vinyl LP "The Ballad Session" is one of my favorite demonstration pieces. It starts a cappela and then the bass joins and finally Tom Harrell on flugel. Her voice is perfect for that song, the bass is incredibly well recorded and Harrell's flugel is so soft an lifelike (I play trumpet and flugel) that it gives me chills. The surfaces are dead-silent and this is a perfectly preserved musical event.
I can't put it up there with Ella's best recordings, like "Take Love Easy" with Joe Pass on guitar, but it IS a wonderful recording. Hmm, why haven't I bought the rest of Eden's discography??? Gotta get busy...
Dave