We have a Sharp R820 -- which I think is no longer available -- but it's a combination microwave and convection overn. It works great, including for things like roasting a Thanksgiving turkey (breast) or doing a pork roast and so forth. If you can find something similar, you might want to check 'em out. Maybe Sharp makes an updated version of some sort, or there are other brands...
South River, Chesapeake Bay