Please keep away from my smelly feet for this! Not too much help, but Shaw and his Chorale recorded for RCA in the old days, so you might start there. I just finished a concert recently where we sang that piece, and have sung it before, and have always been haunted by the soprano solos in it, which are just beautiful. Rushton's suggestion above is a good alternative for you if you can't find your favorite.
You might want to add the discs by the Voices of Ascension on Delos to your lists, particularly their Durufle album. I've heard them in concert (and, sadly, at funerals for some of my former partners) on a number of occasions, and they sing with a straight tone which is not easy but when done right, as they do it, is extraodinary on some pieces, particularly the Durufle Requiem.
You might want to add the discs by the Voices of Ascension on Delos to your lists, particularly their Durufle album. I've heard them in concert (and, sadly, at funerals for some of my former partners) on a number of occasions, and they sing with a straight tone which is not easy but when done right, as they do it, is extraodinary on some pieces, particularly the Durufle Requiem.