Brass is brass, Lapua is no better than any other, worse than some. My experience is that Lapua can be really crappy. I had .22-250 stuff that had bad primer pockets, folds from the neck to shoulder, and split necks. Some were even banana shaped and wouldn't chamber.
Just tossed a batch of Nosler .204 Ruger brass with shallow primer pockets that wouldn't fully seat a primer, and would seize up around uniformer tool, they would get stuck and made my life difficult. Usually Nosler brass is perfect - but things happen.
Just finished forming a batch of Hornady .30-06 into .25-06, worked perfectly, same with Privi brass. The more I work with Privi brass the more I like it.
Eary batches of Hornady .204 Ruger were inconsistent, but they improved. Luck of the draw.
When it's available I prefer Winchester, about 2% culls, but inexpensive. Winchester stuff forms easily in my hydraulic forming dies, where Lapua is too hard to form a proper shoulder easily. .284 Winchester brass forms easily into 6.5x284 Norma, and all of it lasts a very long time. Sometimes we fool ourselves into believing the hype. Truth is, for most hunting and varminting uses the brass isn't much of a factor. The last batch of .223 Winchester brass I bought, the necks ran a consistent .0015" or less in thickness variation, not worth worrying about. Heck, I even had great results forming a special run of Remington 7.62x39 made with small rifle primer pockets into 6mm PPC.
Primer selection has a greater effect on accuracy than any other factor. See below, same rifle, same Pac-Nor polygonal barrel, same load, same Winchester case, both 10 shot groups, different primers. From all the hype about primers, I'd have guessed the Federal Match primer would have been the most accurate - yes? Wrong, the Winchester won the prize.