I wasn't part of this test group but having just fitted a set of NYXL's to my gigging bass, wanted to report that so far I am very impressed.
To date have only played the one gig, so can't comment on longevity but the sound was very pleasing to my ears. They provided the growling tone that I like, with a lovely even tone and volume across the strings. Good level of zing but not overly so.
Importantly as well, they proved comfortable to play and at the end of a two hour gig my fingers were feeling just fine.
Over the years I've most played steels and due to a bit of an allergy, which resulted in very sore finger tips, have stayed away from nickels. Happy to say, that I didn't suffer that reaction with these.
So far then, very happy to recommend them.