There are a couple of versions of the Opal out there. I just picked up the Opal 2.0 which is an improved version and seems to work quite well. One way you can differentiate the units is the 2.0 version has touch button sensors on the front for the power, light and cleaning cycle. If you are really concerned you can get the extended warranty through Best buy. Although I have not used the extended warranty on this unit I have used it on my Samsung refrigerator's ice maker and found the service to be quite good.