Originally Posted by dblvsn
Speed and a more consistent crush is what I've heard you'll gain by spending the extra money. If you're doing large batches it may save you quite a bit of time. As far as the consistent crush matters? Probably not as tons of people use 'em and get similar results.
I don't think speed has anything to do with it. For 40 cents and my electric drill, I motorized my mill and I can grind 10 lbs of grain in a couple/few minutes.
Consistency is a bigger issue - I know that my Corona-style mill doesn't give a consistent crush - lots of grains are just barely cracked. To compensate, I crush a little finer at the cost of lautering. I haven't actually had a stuck sparge yet, but I suspect I would if I was using a manifold or false bottom instead of a SS braid. The other downside is that by grinding more finely, I shred the husks a bit more. Since I batch sparge, I haven't worried about tannin extraction, but it would be more of a concern for fly spargers, I think. However, I also know that there are some fly spargers using Corona mills here and getting efficiencies in the high 70's or low 80's, so it must work for them.