what is the best choir in the world? [Spirituality & Religion]

I suppose making the claim of "BEST" is a boldly subjective call. For me though, I am quite moved by the sounds of "Libera." I don't know that they are the best, but they are a consistent favorite of mine and I consider them a Rhapsody Euphoric.

[youtube=https://www.youtube.com/watch?v=7uw0wiB-H-8]

[youtube=https://www.youtube.com/watch?v=JmO2KlRim6c]