I was all set to purchase the 650.and called Dillon direct .
The guy talked me out of the 650 for what I wanted in a Press and told me to get the 550B
When I received it I set the Primer feed up wrong and Primers were going all over the place.
I called Dillon and they sent me an entire new Primer feed system at no cost to me.
Then I found out that it was my screw up setting the feed up wrong.
I called Dillon again to try and send back the replacement system they told me no it was mine. I told them well then let me pay for it because it was my screw up and they told me nope it was mine have a nice day.
Dillon has some of the best Customer Service that I have ever experienced in any company that I have done business with.
And what Company out there will talk you out of purchasing a higher priced item for one of there lower priced items.
No one will do that.
I absolutely Love my 550b and i am so happy that Dillon talked me into purchasing that one.
That said I have never used their 650 or any of their other presses.
I did use a Lee progressive made probably in the 60s or 70s.
It was set up for 38sp's and was a pain to change calibers.
I do not have any other experience with Progressive Presses so I can not talk about them and be objective.