Drew tagged me, but I'm really out of it on this one. I usually keep away from holiday-themed concerts, unless they are serious music, like the Cal Bach Advent program I missed while sick the other week. In general, I never want to hear any standard Christmas carols again. I have skipped anything to do with Messiah for about twenty years, which means I am ready to sing or hear it again.
As for recordings, Christmas from a Golden Age, a Romophone record now reissued on Naxos (I think), the Leontyne Price Christmas album, and sundry medieval sets. That's it for me.