What are some durable toaster ovens with long lifespans?

The Smart Oven Air Fryer Pro (Element IQ) is a countertop convection oven with an air fry function and 13 smart cooking functions, including Toast, Bagel, Broil, and Dehydrate. It has a 1 cubic ft interior sized to toast 9 slices of bread and fit common pan sizes for everyday cooking. This model suits people who want a versatile all-in-one countertop oven for baking, roasting, broiling, and air frying.

This KitchenAid digital countertop oven with air fry uses convection for even heating and includes an air fry function. It has a 150-450 temperature range, a digital display, and multiple cooking modes including bake, broil, and air fry. It fits a 9x13-inch baking pan, making it suitable for everyday cooking in smaller countertop spaces.

Ninja DCT401 is a countertop double oven that uses FlexDoor™ to create two separate oven cavities, letting you cook two foods in different ways at the same time. It includes functions like toast, bagel, bake, broil, air fry, convection bake, pizza, air roast, whole roast, and dehydrate. It's a good fit for busy households that want oven versatility without dedicating counter space to a full-size oven.