Got a type of that sort of thing here, very similar to the one 'bald foodie guy' on you tube uses, not the ninja air fryer, but the oven type one he uses.
Some things are OK when cooked in there, others, such as three quarters of what you'd put on your cooked breakfasts are pretty dismal.
Personally, I wouldn't recommend one.
Just asked the mrs now, she said things like home made Yorkshire puds, roasties, pizza etc is fine, but still cooks all our meat in the normal oven, and all our cooked breakfasts etc on the oven in conventional frying pan and grill.