As much as I hate to disagree with another Forum member, the 550 is most definitely a progressive press. It is also a great press to learn on. Quoted from Dillon's website...Dillon’s RL 550C is the easiest progressive loader in the world to learn to reload with. I would think that many members here started out with the 550 and moved up. Learn the basics and then consider how much quantity you want to load. Your initial plan of learning on the 550 and then going to a 650 or 1050 is a good way to go.