Ordered the 27” but it was not available so we chose the 30”. So glad we did. Lots of room inside, glide racks are wonderful, convection baking made Christmas cookies a breeze. Can’t wait to try out the other functions like bread proofing, slow cook etc.  Love the air fryer function. Onion rings were perfectly crisp. Looks so nice in our kitchen. Lots to learn but will take time to fully utilize this wonderful appliance.