NOTHING in the following is intended to denigrate the old, much lamented Star Reloading Machines, from everything that I've either seen or heard about them, I started reloading, using an RCBS Jr. Press in 1965 has indicated that they were about the greatest thing to come along since "sliced bread". As was mentioned earlier in this discussion, the Star Lubricator Sizer is still produced.
Having said that, and also having used one since the early 1980's, the Dillon 550 is a quite good machine also. Their claim to fame, one of them anyhow, is their NO BS WARRANTY, which in my experience is exactly the case. Also, their post sale support and service is something rather special, especially these days. They really do stand behind their products, which by the bye is not to say that Star didn't.
In conclusion, given that, as I understand things, Star Machines are not currently produced, correct me if I'm in error, while the Dillon machines are, a factor that might well answer any number of questions, given that one has to work with what that they can obtain.
A passing note, should anyone be interested. Re Rifle and Handloader magazines, in-so-far as I can recall, I have a complete set of each, which according to my long suffering wife, to hear her talk about it, take up a bunch of room in our smallish townhouse. Should anyone be interested, give me a shout.