Have all three (550, 650, Ammo Plant).
IF you are needing to reload in high volume, go with 650/750. 800 per hour is the norm. YOU have to keep the monster fed with the ingredients.
The red item is finicky. Sorry, it just is.
550 - CAN be used with a no/low powder sensor, if you seat and crimp with one die.
Output of the 550 is 300 per hour, without breaking a sweat, regardless of caliber.
There is more aftermarket items offered for the Dillon brand. Only non Dillon item that I use - dead primer catch tray. Strong mount, roller handle, bullet tray.....and you are set.
