Although I know how to use a search function, humans tend to be able to recommend personal opinions a lot better.
I'm looking for recommendations for music that will work really well with a choir of 250+.
For practical reasons, Mahler is not an ideal option.
Examples of stuff that might work:
Beethoven Missa Solemnis; Poulenc Gloria; Berlioz Req / Te Deum; Vaughan William's A Sea Symphony ... it doesn't have to have big orchestra - Rach Vespers works well at this size.
So, surprise me - it doesn't have to necessitate massive, it certainly needn't be difficult or "a big sing". It just needs to work really well for giant choirs. What would you recommend? What would you like to hear done like this?
(X-posted at IMSLP