Bought this right before Christmas, as my old one became dangerous to use. We do a TON of baking and utilize the oven a lot. No matter what, we can't get this thing to work properly. Diced potatoes take close to 2 hours to cook in this thing instead of the 45 minutes they should. It's IMPOSSIBLE to get a crisp pizza crust or cook the bottom of anything properly in this thing. It's like there isn't even a bottom bake element. Don't even get me started on "air-fry". It seems like it only "air-frys" at 300 degrees, no matter what setting you have it on. So frustrating.