Love my double wall Advantium oven. Upper combo oven=Microwave/Speedcook/Convect Bake is so versatile. It uses a combo of halogen heat lights and microwaves. Easily acts as a small oven for side dishes and could even do a small turkey. We are almost empty nesters and love not having to heat up the full size oven unless truly needed. There is a small learning curve on using all the fantastic settings but totally worth it. Just read the LED screen, and it tells you exactly what to do :) If you are 5’ 4” or shorter have you cabinet company lower the oven wall cabinet cutout by 2”, so can easily clean the inside of upper oven. My GC just went with standard cutout,  I have to use a step stool to clean far in the back. Minor detail.