Another Dillon guy here. I have a 650 which I use to do large runs of ammo (5000 to 20,000 rounds each setup), mostly pistol ammo with it but I have run a LOT of .223 and 308 ammo out of it. I have the case feeder on it but prefer to set bullets by hand. Caliber conversion takes about 30 minutes, so I tend to set it up and run several thousand rounds off at a time. In other words, it's a really good production press that you can put to great use in the off-season, but doesn't lend itself well to making small runs on an as-needed basis.
If you're doing pistol only, the Square Deal B is a great little press. One of my IDPA pards has 3 of those, one is always set up for 45 ACP, one for 9mm, and the other he converts to the caliber du jour as the mood strikes him. I've got one SDB that's always set up for 45 ACP, as that's what I find myself in need of a quick run of 200-300 rounds of most often.
Dillon's customer service is superb.
FWIW, I run mostly Lee and Redding dies in my Dillons.
