Silent,
I am very happy with my Rock Chucker. I think there's alot to be said for learning with a single-stage, though Zak's point is well taken: if you want to pay attention and learn the ins and outs, you ought to be able to use a progressive from the start.
Cost is a big factor for me just now, and though I expect to someday get a progressive, I just can't. And I'm doing fine with my RC, which keeps me in ammo for my .45s, .40s, M1, Springfield, K-Hornet, and AR. Also, I still have small kids (and their friends) at home, and I couldn't leave the thing set up the way you do with a progressive. And I do worry about all those primers all stacked up.
But thousands of loaders use progressives all the time, and I'll be one of them someday. In the meanwhile, I must say I really enjoy the feel of it all: sizing, priming, flaring, seating, crimping. I love to feel the case being sized, and the snug feeling as a bullet seats. I just hasn't become drudgery for me yet after all these years. I enjoy handling those bright new cartridges as I box them up. So I'm some kinda pervert, who cares? I'm happy.
One change I've really been glad I made was to go to carbide pistol dies. Not having to lube means I can clean before sizing and be done with it.
But I guess I am, as my friends say, a "retro-grouch". I tie my own flies, build my own leaders, fish bamboo with silk fly line. My racing bike has only ten speeds, and sew-up cotton tubular tires. And yes, I can sew them up. It's good being a retro-grouch.