There's no plastic part in the 650 priming system
They fixed that on the 750.
I think the part that wears and gives problems, if I remember right, is the plastic end piece at the bottom of the primer tube.....no I was thinking of the primer pickups...they are removed once placed in the machine, so it's a mystery. Jmorris, what did you find that caused your friend's bright and loud experience?
I also think that those thinking about buying a Dillon, (who don't know "nothing about it"), have the right to ask the important questions without the knowledgeable getting defensive. Nobody is trash talking either press, that would be dumb, and unproductive.
Dillon's reputation with customers speaks for itself. The question is, why is Dillon is changing the priming system?.... and will the 750 be as good as the 650? Don't think we will know those answers until people get them.....especially those who have a 650 too, to compare them to.
Premature thinking to be sure, but I tend to think jmorris may be right......economics....
("From a business perspective it’s cheaper to make one thing vs two different things")
And of the two things, if all else is equal, pick the simpler, cheaper one.......we will see.