I am a BIG fan of Dillon loaders. I have a Dillon 550 and 650 with a case feeder. Both machines do a great job making .223 ammo. The 650 is a bit more complicated to set up and get going, but it has a much higher output rate.

While I really like the 650, if I had to choose only one progressive machine for everything, I would choose the 550. It's a great machine, and it's very easy to work with. My 550 is over 20 years old, and I am the 3rd owner, yet Dillon continues to support their product without question. You just can't beat service like that!