I believe that Nosler brass is made by Federal, but is hand sorted, selected and prepped.
Over the years I've had great results from Winchester and Remington brass once it has been sufficiently prepped. I get the same results from Norma and Lapua and Nosler without having to prep it. Of those three, Nosler seems softer and has a shorter use life. Norma and Lapua seem about equal in quality, so I buy whichever is cheaper.
I just got tired of prepping brass, so now I use Norma and Lapua.
The above is what I think, based on my experience, which makes it an opinion and not necessarily fact.