The Dillons are great for cranking out large quantities of a specific caliber.
Hornady L & L is better for making some of lots of different calibers. Once set up it is easy to go from one to another. I don't think it is as fast as the Dillon, but it is 'easier' to change over (I like that each die is locked in by itself)
I have a Dillon for 45 & 9mm (two separate machines) want to get one for 223 as well.
I feel I could load high quality hunting rifle loads on the Hornady - don't really have that confidence in the Dillon progressives.
I'm very happy with my LNL loading 45 ACP. Primer feed system needs a little extra care and watch. I go slow to ensure high quality loads. Typically make 100 rounds in 30-40 minutes with no problem. YMMV
I use a LnL AP and a LnL single stage press. On the AP I can do 100 rounds in about 15 minutes. Primer feed is the thing you need to keep an eye on. Love the Hornady equipment and would recommend them.