Vegas also had several very good performances in 2014 - I think that could be classified as one of the last decent vocal shows:
https://youtu.be/oYF2OZACqpU
https://youtu.be/fqo1BN7L45M
https://youtu.be/WNp5HGkpyWg
https://youtu.be/BwyCzHe88rI
... and a few other songs I remember were solid there.