I have both a single stage and a progressive. I like to work up my "recipes" on the single stage by loading 20 or 30 cases, take them out and see how they shoot. Then I go back and tweak my recipe a bit until I get something that shoots good. When I get the recipe dialed in, I transfer it to the progressvie, crank out a few test rounds, and if it is good, I go to town. My wife and I used to shoot over a thousand rounds a month. The progressive paid for itself real fast.