I'd like to ask this question to all cabinet builders. If you could choose, from hoppers: Azkoyen U-II & Cube Hopper MK II, which one would you use in your cabinet?
As for criteria, I would say the most important is wide spectrum of coin sizes, jam proof, size, ease of maintenance. Speed is less important.
At the first look, I'd bet to Cube Hopper, but I'm not sure. I have opportunity to buy both in a good price right now, but I can't decide.