When we thought out Norcold was failing several years ago we researched replacements extensively. We wanted something that would fit in the existing under-counter space, would use the same AC/DC wiring, would have the same refrigerator/freezer capabilities, and would if possible use a Danfoss compressor. The unit we selected was an Isotherm. The Norcold revived itself and has been running fine ever since so we have not needed to replace it. But when the day comes that we do, all else being equal we will go with the Isotherm unit.