I'm too young to have seen any of them live, but I have a bunch of the albums (and a good site for that, BTW, is
Primarily A Capella.) IMNHO, the very best of them is the great Glenn Miller. I can listen to Miller all day.
BTW, if you were to pick up the phone and dial (212) PEnnsylvania 6-5000, even today you would reach teh Pennsylvania Hotel in New York, where Miller played in NY.