I've tried & tested most of the mills on the market including a top of the range S/S 3 roller mill from Crankenstein.
All the mills (like the car anology I used, that upset a few in another thread) will do the job, eventually, but every idle roller mill I've used has suffered from the idle roller refusing to turn at some stage (especially wheat in its various forms). In a home enviroment this probably isn't much of an issue, but in a commercial one where we've personally spent half an hour trying to crack 1 kilo of wheat (no exaggeration) it is, never again.
Most seem very happy with the choices they've made & why wouldn't they, it's very satisfying milling your own fresh grain.
I believe most of the mills on the market are all pretty good value for money, but you generally get what you pay for.
Cheers Ross
Edit: I was very happy with our Crankenstein from new, but the idle roller problem we experienced & from feedback I've read, gets worse over time.