It has spoiled me for buying roasted beans and I can't imagine not having it in my kitchen.
Positive Product Points
Easy to use and clean. Repeatable results as long as all variables remain the same Durable feel.
Negative Product Points
Noise is a little loud to accurately hear the cracks. Use in well ventilated area especially for dark roasts.(outdoors is best or next to open window) Needs good 120v+ for proper roasting.
I have been using one of these for about a year and a half and am still happy. About 2-4 roasts a week and would say that it may be getting tired but still cranks out the coffee.
I have found it to be voltage dependant and if other large items are sucking juice in my house and voltage is down to 118v-119v it will take a few extra minutes but if I'm getting 122v it comes out perfect. Have considered a variac but have found by only roasting if no other large appliance is running I can get very reliable results. Mostly set and forget unless I am trying something new.
As others have noted you can overload if you use the enclosed measuring cup and get an uneven roast. I have found about 130g to be what it can handle for full city in 11 min roast + cooling time. I use a little less coffee if I want a dark roast or crank up the time to 13 min.
Lately I have been experimenting with a small piece of foil occluding part of the air exhuast but need to pay close attention so as not to overroast because roasting time shortens considerably.
Bought from Coffee and Kitchen and the first one was DOA and they happily sent me a return shipping label. My second one worked great right out of the box. I have and would buy from them again.