We have only had our stove for approximately two weeks so we have yet to use the convection or air fry options.  Based on use thus far the controls are easy to use; the oven quickly heats and temperature/cooking times are accurate.  The finger resistant stainless finish coupled with the black insets are very complimentary and work nicely in our kitchen.  We recently replaced all of our black appliances and the stainless brightens up the area.