Let me toss in some 2 cent stuff, just for what it's worth. When I buy any tool, I tend to try to go with the one that will require the least amount of time and effort if the tool is going to be used a lot. If I can save a LOT of time, and wear and tear on my hands over the life of the investment, then I will generally always take the "cry once" attitude.
I started with a Hornady crank trimmer (works great), and a motorized Hornady Case Prep assistant (also works great). When I got 2000 Lake City cases to be converted to 300 BLK from David. I said hell no. Paying a few hundred dollars extra to make me stop hating brass prep was worth it for me. I get a little back from that investment with every case.
When I was just doing 458 SOCOM, the fiddly prep setup worked just fine. When Obama gets reelected and you start looking at thousands of rounds, the high volume prep solutions start looking real good. Sometimes a little laziness can be a virtue. :)