Yeah, I'd go either Dillon or Hornady for the volumes the OP is talking about. I personally went with the Hornady because it's feature equivalent to a 650/750 at about the price of a 550 (frankly I'm somewhat confused that the 550 still exists, as it seems to me to be strictly inferior to the 650/750 and the Hornady, but maybe there's some factor I'm missing), plus the quick change die bushings are nice if you load (or plan to load) multiple calibers - they make switching over very fast and easy.