I am in the market for a 30 inch electric wall oven and the most important factor to me is for it to have a relatively quiet exhaust fan (I am not referring to the convection fan that I can choose to use or not). My expensive Viking double oven is a hunk of junk with a 60-62 decibel exhaust fan (at 2-3 foot distance) according to the free decibel app on my iphone. It runs during baking and at least 45 minutes after the oven is off. Any suggestions for a brand or model that is quieter would be appreciated. I don’t care about any other feature and all price points are acceptable. Thank you.