I have a 550, and like it very much. Also, I would suggest if you didnt already buy dies, to buy Dillon`s. They have big, funnel shaped mouths, perfect for guiding the brass into the die, reducing hang-ups on a progressive. Their dies have other neat features, like being able to clean the dies, without changing their settings, and reversable seater stems, that have two different profiles. (For SWC and RN handgun bullets).-keep `em in the black!