A:Answer The 800 series is superior in that it has 2 compressors. They’re the only “regular” size refrigerators with 2 compressors. You’d have to spring the luxury high end refrigerators I.e., Sub-Zero if you want 2 compressors. The compartments stay super cold. The outsides of the refrigerator near the front may feel very warm when the compressors are working to regulate the temps. This is normal and I only noticed it for the first few days after mine was delivered,