I would be a little hesitant about Millars Mill only because if you look at the website overall - he's like a Ron Popeil...selling all kinds of things that he "invented". Exspresso machines, pizza ovens, malt mills...etc.
I found out that he only warranties it for 1 yr as a homebrewer, 6 months commercial. It may have "upgrades" compared to Barley Crusher or Monster Mill...with better bearings and the "pro-last" roller design which he claims adds life to the stainless steel rollers.
I don't have a mill yet...but I do know a thing about business and sales. If you are going to say we have this and that....why not back it up with a warranty then? Barley Crusher, Monster Mill, Rebel Mill....etc they all have warranties longer than the Millar Mill....BUT the Millar Mill is supposed to be better? It hasn't been out that long and they are already on the 3 version. Also people haven't had them that long to see if they last. That would be my issue in picking a mill....the others have been out for a while and all of them have pros/cons....but all of them have large customer bases too. I guess I'm just a little skeptic when they say they have the best mill available, sell it for cheap, but the warranty is only for a year vs other manufacturers who have basically an unlimited warranty. That makes we wonder if he believes in the product he is selling....that's all.
It's sort of like a brand new car or a complete redesign with a new engine...it might get great gas, more horsepower...etc but until it's been out there for a while and it's got some miles put on it - you don't know about it's reliability.
I understand what you're saying but for me the factor was money and convenience. While I enjoy DIY I simply don't have the time anymore to build everything myself so I went with an affordable solution that has the hopper and rails included. But I agree that it might not be the same high quality as the MM or Crankandstein. You get what you pay for