Didnt have the room to put in a double oven so this combo unit allowed us to get all that we wanted.  Now this microwave cavity is much smaller than the GE microwave we replaced but the turn tables are the same exact size so I imagine there will be no real difference. What I really love is the convection oven! While you can roast a 20 lb turkey, you can cook plenty in this small oven. This is the first time I've cooked by convection so that took some getting used to, but dont worry, this is a real oven! All of my regular baking dishes fit, the only thing that doesnt are the larger cookie sheets.