Remington: Soft and thick. I'm not crazy about it. Only if you get a hell of a price.
Winchester: Thinner and harder, but the quality of manufacture in recent years has been less than wonderful.
Hornady: Not the best, but pretty damned good.
Norma: Very, very good.
Nosler: Right next to the top. They do a lot of prep work so you don't have to. I've never seen a bad Nosler case.
Lapua: The best. Very high quality of manufacture and extraordinary toughness. Their cases go on forever.