Product review (4 stars): Love this little machine!
I have REALLY enjoyed making ice with this machine!
The water hopper holds about 3/4 gallon of water (to the fill line), the ice hopper holds (as a guess) 2-4 cups of finished ice. Once the ice hopper is at its fill point, it will stop making ice until either you empty the hopper, or it melts on its own. It is NOT a refrigerator or freezer, so the ice will eventually melt back down and drip back into the water hopper if you don't remove it. If the machine runs low on water, it will also stop until more water is added. There are red lights that indicate which is needing attention, the ice to be removed, or the water to be filled.

This thing does really crank out the ice. Once my ice hopper is full, I dump my ice into a gallon "zip-lock" bag, and toss it in our chest freezer (the ice is drippy at this point). I usually dump the ice 2 times into the bag, and it settles nicely into the freezer. When we take a bag out to bring into the house freezer, we thump it on the workbench, the ice is nice and broken apart into its cylindrical shapes, and into the ice cube box inside they go.

Someone asked me what it has done to our electricity bill. I never thought about it, as it isn't a huge concern I want ice and I can almost guarantee it's less than what you would spend on bags of ice from the store. We use it once a week to stock up for the following week. This may be something to think about if you will be using it frequently.
Also, the "noise" someone complained about I was a little nervous about. It's not any more noisy than a desktop computer turned on, or a refrigerator running (it's a running fan sound). When the ice dumps, well, it sounds like ice hitting plastic, but I would hope that's to be expected. I used it once at night and it didn't keep me awake. The kitchen is 20 feet away from our room. I won't use it again at night, only because the ice hopper fills up so quickly, that me getting up every 3-4 hours is out of the question.

The reasons I did not give it a 5 star rating are:
1.) MINOR issue (if this was the only issue I would have given 5 stars), is in a beverage the ice does not last nearly as long as store bought ice, or ice made with an ice maker in a freezer.
2.) A little more of an issue, there is a slight "off" taste. I tried with our tap water and also store bought water, There was no difference. I add about half to one teaspoon of lemon juice to a gallon of water, and the taste is masked. I will try with no lemon juice in about a month, and see if there is any change.

I did buy a 2 year appliance plan ($16.00) based on another review of the fan going out, and I knew this would be a primary ice maker for us. I thought for the price, if something happened, it would be well work the 16 dollar protection.