Kevin - I went through the same thing a while back. I've been using my old semi-progressive Ponsess-Warren Metal-Matic for all my handguns since graduating from single-stage loading around 1982. Anyway, last year when I saw all this coming, I sprung for a Dillon RL-550B, and I've never looked back.
Even if they're B/O right now, get your order in now while you can before the backlog gets any longer. I'd also strongly suggest getting the Dillon dies.....I tried to use my old RCBS dies, but they're really not properly designed for progressive use. The Dillon dies have a unique, highly polished funnel opening on the bottom that never, ever binds or jams, and produces ammo as or more accurate than I ever loaded on my single-stage press.
My Dillon during a session of loading .45's with the H&G 200gr SWC:
I can easily crank out 500 rounds in an hour if I've got all my stuff on the bench, ready at hand. Also consider the EGW chamber guage, offered by Midway, Dillon and others. It's cut with actual chambering reamers, so you'll never have a ill-fitting round in the field if all your ammo was checked at home. Dillon also has customer service that rivals Leupold.....real humans answer and actually help you with whatever you need if problems or questions arise. Two thumbs up here.
