There's alot of things to consider when selecting brass but overall start off cheap (what you have) and change if you need too. Proper preparation/culling of your brass, whatever brand, is going to far outweight the name on the bag or box IMO.
As far as the results someone wrote in a magazine, well that's the results that person got, on that day, with that load when testing different new brass. So what does that mean to us as reloaders ... basically, nothing.
As far as the results someone wrote in a magazine, well that's the results that person got, on that day, with that load when testing different new brass. So what does that mean to us as reloaders ... basically, nothing.