Prep time is a big one, then develop a definite pattern to your procedure with an automatic, DON'T CHANGE IT or you'll have powder in the wrong places (oops, where is that primer!). Still waiting for a pocket reamer from Midway, I'm going the Hornady ream route to prep military primer pockets, neighbor swages to convert, I'm not sure about that idea, no I have not tried it. I set up a drill press (chuck contains a de-priming homemade punch, not spinning, just pressing) to work as a de-priming station, pops those primers out fast, then polish tumble the brass w/o old primers in there, looks like it will keep the L-N-L AP press clean and allow for pocket inspection and good cleaning.
What say you, your $. 02 always appreciated.