The more progressive the press gets the more issues. They all have a rythym they like to operate at. Tend to take some breaking in or disassembly and polishing of critical parts . Have run dillons for over 30 years. Would consider the 550 a very good fit for most. Bought a 650 one time from a guy that had it so jacked up there was no way he loaded anything with that press. If getting and keeping a progressive press tuned and running smoothly is a challenge then keep the progressive press a somewhat simple model.
