DWSS
Daniel Wilson Composer
If I were you, I'd choose Arva. It has something for you that Genesis doesn't have in the soloists.I figured I can't go wrong, but I'm also not sure that I need so many childrens choirs - not that I have too many right now, but Arva has the soloists too that Genesis doesn't have, and those could be very useful in some situations, so I'd probably want to get that eventually for the soloists. In the long term do I really need both?
(I'm also trying not to collect libraries just for the sake of collecting libraries)