Thanks for that. I'm old, and I'd like to live out the rest of my life without experiencing a multiprimer detonation. The potential may be there, but the chances have to be very low. I do appreciate the explanation, and it makes the 750 a little more desirable.
As for value, I've seen a couple that had extras, stuff that I would not buy, but they are set up for a different caliber, and it will cost 300 bucks to set up for 9mm, which is 80% of what I shoot, at that point I might as well buy a new 750. I've looked on Facebook, and I've seen pictures of the same press for sale by 3 different people, in 3 different cities. Be careful out there.