I use alot of Remington and Winchester brass, prices run about the same for these 2 so its a matter of personal preferance or which one happens to be on special when I need it

I pick up alot of range brass but only for the pistols. Everyone seems to load thier own rifle ammo and any brass I' ve found (for rifles) is pretty well shot and I won' t chance it. Over the course of the year tho I get enough 9mm, 38/357 that I don' t need to buy it. Also, I meet alot of old guys through work that have brass/ammo laying around they want to get rid of and I' m always happy to help them dispose of it.
Looking at my current inventory I could probably shoot for the next ten years without having to worry about brass.