Time to get a progressive but not sure which one would suit my needs the best. I wouldn't do high volume and would continue to do rifle loads on a single stage. It wouldn't see a lot of use but occasional runs of 500 or so 9mm and some 223 for plinking for my SIL. I don't think I really need the sheer volume capability of the 750 and I've heard there are issues with a powder checker if I add a feeder anyhow. Any big advantage I'd be missing if I skip the 750 and run with the tried and true 550?