What do users think of the Viking microwave ovens?
Overpriced. By a lot.
I have one. It's a rebadged Sharp but it fits in a trim kit so it's installed below my regular oven. Nothing special and certainly not any better performing than the $150 Panasonic I have in the pantry.
Viking MWs are badged Sharps. Save yourself over 50% and get a Sharp and spend the savings on something that matters. Unless you think the Viking badge is worth $500...