When I got serious about getting a progressive, I located people who would let me try out their Dillons, Lee, and Hornady progressives.
Of the three, the Hornady is by far the most modern...the Dillons are really dated and far more expensive to change calibers than the others, and some key parts of the Lee Loadmaster are hard plastic.
Hornady has by far the best powder measure on the market...rotary, easy to adjust, and has a feature that once you are happy with a particular powder setting you can press a button, remove the powder chamber, replace it with a spare, and store it with your dies until the next time...when you simply put it back into the measure and start reloading...no adjustments. The inserts are about $8. I'll simply say that Dillon has about the worst powder measure...slide design, frustrating to adjust to change charges, ect.
The Hornady Lock N Load system makes it extremely fast to change dies...the dies fit in an inexpensive locking bushing...once the die is roperly set, twist a fraction of a turn and the bushing comes out on the die. Next time you want to reload, slide the bushing in, give it a twist to lock the bushing, and start reloading. With the Dillon, you replace the entire die plate...expensive!
I appreciate my Hornady more every time I use it...my time is spent reloading, not adjusting.