I disagree with any progressive for a beginner, there is just too much going on at one time. Progressive tools increase the opportunity for error hugely, compared to a single stage press.
Understood. The learning curve can be accomplished on a 550 by just placing one piece of brass in the shell plate, de-prime and size, move plate and fill with powder, move plate and seat bullet, and move plate to crimp. Continue to do so until the person is comfortable in the process and has a good understanding then they can fill the shell plate and us it as a progressive