I bought a Monster Mill 3-roller mill last December, and I knew I wanted to motorize it.
I looked at two alternatives, both of which you know: the keg king alternative, and the ale works alternative.
Obviously you'll save some money w/ the keg-king motor, but it's really a homebrewer-level motor, for a homebrewer setup. I haven't seen any negative press on the keg king, so I think it's a reasonable setup. BUT.....since you have a 3BBL setup, you're going to be going through some serious grain. Is a mill motor meant for the homebrew market going to be heavy-duty and long lasting enough, given the amount of grain with which you'll challenge it?
In the end, I closed my eyes and pressed "buy" for the American Ale Works motor. I knew--or at least believed--it would be the last motor I'd ever have to buy. It came with the Lovejoy connectors and it was easy to set up with my mill.
It's a beast. I can go through 12# of grain in about 2 minutes, and I don't have to babysit the mill while it's munching through the grain.
Given the size of your brews, I'd be looking at more heavy-duty as the correct trade-off as opposed to less expensive.
![millcartb.jpg millcartb.jpg](https://cdn.homebrewtalk.com/data/attachments/528/528638-5a6947dcd8fb71bdd582e9985e9a6fac.jpg)