I see you've already chosen a brand of brass, but I thought I'd throw in my 2 coins anyways
In my rifles, .300 Win Mag is what I put the most money into (top-shelf components, brass etc), and I use Hornady brass for load development/target shooting/hunting/general useage... But I have 200 rounds of Nosler Custom brass that I use for competition loads (F class).
The Hornady brass is absolutely excellent, I have a certain 50 that I have now loaded 7 times, and only trimmed twice - case heads haven't expanded a bit... impressive. I would use them for my competition rounds if they weighed more consistently.
The Nosler brass is extremely consistent, all four 50rd. bags I ordered have all been extremely tight - however at $1.25 per case, it's a little high. I've only loaded them 3 times (50 still unfired - waiting) - and they've stretched more than the Hornady's did, but accuracy has been phenominal.
I've been buying a lot of Federal Premium brass lately, and have recently purchased new, unprimed Fed brass in .223, .30-06, .280 Rem - and they have been MUCH better than other standard commercial brands - thus far... by commercial brands I am talking about Rem and Win. Right now I have some 6mm Remington brass that I am working into a custom rounds for a fellow - .22/6mm ... a nice little 1000 yard screamer that shoots 90gr. .224" bullets at 3200+ fps ... Just got the rifle built and am forming up some brass, so this will be a great test on how well it holds up.