My take on your lubrisizer - The Star is probably the "cadillac" of the ones generally available and, as Lloyd has pointed out, it's his first choice. You'll not go wrong following Lloyd's advice. The RCBS model has a tremendous warranty as outlined by GB and others. And it works. The Lyman 450 just may be more available sometimes (probably as others are upgrading) and is probably the cheaper in the used market. Mine was $15 for a box of stuff which contained a Lee Electric Melting pot as well as the Lyman 450 and some dies and some pure lead. It was a steal, so I don't mind buying a few parts for it. So far it has cost $13.69 in parts and shipping - not a big deal from here. We are talking cheaper than a Lee sizer here and it lubes also. The dies for Lyman and RCBS are interchangeable - not so with Star and some of the others. I've had this Lyman 450 for 16years. I just might have to keep it.
Oh, and that Lee pot is still running, though not like a new one. I've used it for smelting and, also as Lloyd has pointed out, that's not a good idea as it takes forever to get it cleaned out and stuff gets into the bottom pourer and things get messy, especially when you melt the next batch of lead and it starts running all over the place because some particle is holding the bottom pourer open.
Like Veral's molds, the 'good stuff' just makes everything more satisfying. You get to pick and choose which to splurge on and which to economize with.
Your 'methodology' of exploring all the possible powder/primer/bullet combinations will teach you much - it's a great education. Now add it your cast bullets with and without gaschecks, various crimps, various seating depths, various sizings, various lubes, and you've just started on a whole new program.
Stay safe and have fun!
Regards,
Sweetwater