We LOVE this and use it almost daily. It preheats SO fast--literally a couple minutes to go from cold to 425. It cooks quickly, too. With two young kids, we would spend a lot of time to pre-heat the oven for a small tray of nuggets that would then need to cook for 25+ min. This heats fast and cooks fast, so they are done it less than 1/2 the time.