I gave this oven 3 stars because
1. There is no drip pan for under the air fryer basket.  Any fat or juices drip onto the elements.  Messy.
2.  When the oven finishes preheating, it immediately starts the cooking countdown.  You have to stand by the oven to put the food in quickly!  It should hold the temperature until you put the food in, then be able to start the timer.
3.  The signal is not loud enough (see above).  I cannot hear it if I am even a short distance away from the kitchen whereas I can easily hear all my other appliances.
4.  On a good note, the oven is quiet when in use.
5.  A nice looking, well-made oven but I would not buy it again.  Disappointing.