The only thing I can see with me doing a mistake on with a manual index is not indexing.
With a auto indexing I think worse case scenario like I take my eyes off it to see what hit the door, etc.
It could all simply be because I'm so use to my current set up and being comfortable with it that I am nervous on going to almost a fully automatic press.
I looked at those SDB and the 650. Almost $300 for a 5th location? I'll have to do more research on that.
My YouTube MOLON LABE
Training pays off
...so keep active with your firearm. It could save your life one day.