First off, I am not a competition shooter. I am just a hunter who does it as a form of practice. I am way too sloppy to ever spend enough time prepping my ammo and doing all the stuff the serious shooters do.
The two dies I would recommend for the lazy sloppy person are
1. Lee Neck die. You really have to try hard to screw things up using it.
2. Forester or Redding competition seater die,
If you can get those then you will need a "body" die from some manufacturer.
As far as the Nosler brass, there are people who claim it is good in other calibers and that only the 308 is bad, but IIRC they don't shoot 1K competition where any member of the public can see the scores.
As far as good brass, the sorted Win brass ( 75 pieces out of 330 pieces) is about as good as the Norma and neither is as good as the RWS. However, you can never find any RWS to buy because it is all bought up. I do not shoot Lapua in competition but there are people who do and it is supposedly very, very good.
One reason my kids beat me at F-class is that I let them use the RWS brass (that's my story and I'm sticking to it)
Why is she smiling? Quantico F-class
Good Plan Gone Bad
As far as culling pieces of brass, that bring up a funny story. I began doing that by using a waterproof Sharpie to mark every case that gave me a bad score during one match so I could see if it gave me a bad score the next time I shot it. At the next match my daughter was shooting that batch of brass and had a bad flier and looked at the piece of brass and saw it was marked up. She made them call down to the pits and ask why some of the rounds were marked up and so I told them that it might be a piece of bad brass. She got really mad that I would bring "suspicious" brass to a match. Needless to say, I quit marking the brass and just threw it away after that.