Opinions differ, of course, but I began loading on a progressive loader more than 45 years ago because I would rather shoot than reload. A lot has happened to progressive loaders since the old Star, which I still have.
The most versatile loading press is the Dillon 550. You will only need one shell plate for the 3 calibers you mentioned, but you would need a powder funnel, smaller powder measure slide and dies with the approprriate press tops.
This is a lifetime investment, and since nobody loads with a single stage press these days, buy what you will be using.
If you set up a loading rhythm, do not let yourself be distracted and use common sense, loading with a progressive is as safe and certain as with a single stage, which takes forever to turn out a batch of loaded rounds.
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