Bill,
You have a question about choral music and you don't ask me first? I'm horrified
Two cool recordings to try--
the old standard with dear white haired Arturo raving with NBC radio orchestra and Robert Shaw chorale. You get to hear him rant like crazy on the podium.
Giulini with Berlin Phil on DG. Other than the tenor, who sucks, this is a fun recording with some dynamite voices.
I know there are others, but these are quirky and fun.
Kris