Starline is good, but I've been really impressed with Jagemann. I was using mostly LC for the last several years, but have completely switched over to Jag for all my 223s. The weight is very consistent, it seems to last more firings than LC, and comes fully prepped (at least in the 556/100 round bags). You may have to run a mandrel through some of the case mouths as they can get dinged in shipping. General internet wisdom says that Nosler brass is made by Norma, but I've been told by a good source that it's actually made by Jag. Anyways, I don't think you can go wrong with either brand.