I had originally purchased one beginning of 2017 only to have it fail after a few months of use. I was skeptical that a new unit or even anything built by KitchenAid would fail my quality standards test. After successfully warranting the faulty unit and getting a brand new one back in the mail, it's safe to say I am really impressed at how quickly this oven warms up and keeps food hot. I have tested the temperature settings with an infrared gun and it holds to within 5 degrees of the specified amount. I love the stainless steel finish as well. Gave it 4/5 stars only because the first one stopped working and would've loved a separate main on/off switch. Overall a great product nonetheless. (This review was collected as part of a promotion.)