My Cuisinart air flyer is pretty nice. It's mostly a toaster oven, but adding a fan to a toaster oven is easy, so it does double duty. It's not particularly repairable, and they don't sell individual parts. The coils are a little weaker than they used to be, but it's not too bad. Maybe not "for life", but 10 years of near daily use is a pretty good run in this context.