Here's what I learned: Despite what many folks would say DO NOT get a single stage especially if you consider yourself a mid to high volume handgun shooter. There is nothing complicated about a progressive reloader. "Too many things going on" my eye. If you can drive and watch your dashboard instruments at the same time, you can use a prog.
A prog IMO is even safer than a single stage in preventing a double charge. The only rule is: Don't short stroke the lever. Compare to: An array of 50 shells arranged 5X10 in a loading tray that you place powder in one a time, your S.O. or something distracts you. You come back to your work and...Hmm.. where was I?
Also, if you decide to go prog, get as many stations as you can afford. I have a Lee Pro 1000, it has three stations. I ended up buying a Lee single stage for the crimping operation. Get at least 4 stations. The Lee Loader is a good deal. The folks in their HQ are very knowledgeable and very courteous. They helped me with all my questions. Also the internet gives you easy access to information in case you do get stumped by your prog. Plenty of knowledgeable folks back in the Reloading board of THR.
I don't use auto case feed and auto bullet feed, I check each piece of brass before it goes into the cycle and I check the case under the seating station to verify that it does have powder in it. I can still crank out about 90-100 rds in 30 minutes!
Benchrest/target/precision/small volume shooters should probably get a single stage.