The Microwave feature of using it as a smaller convection oven is ideal for smaller cooking needs of an oven.
The preheat feature of both ovens are slower at heating up to a hotter temperature can be annoying.  But the capacity of the cavity of the lower oven and convection oven is overall great for cooking larger meals. circulation of the heat by the convection oven should heat more evenly.  With more use i’m sure I can adjust the heating.