We did the Verdi last year, or maybe it was the year before, and it was indeed moving. (It was also something of an endurance test; my chorus doesn't have room for chairs in its performance space. That's a long time to stand in one place.) Somehow, by whatever stroke of circumstances, I have never performed the Mozart. I'm familiar with it, of course, but listening is not the same experience as singing.

I agree with you about requiems. So often they are a composer's masterwork. I wish Beethoven had written one.