They're tiny convection ovens and really do do a great job at fried/crispy stuff. However I've already got a toaster oven with a convection fan, so I have a hard time justifying a whole ass appliance that does fewer things.

If you already have an :sicko-instapot: they also make special lids that fit on top and blast hot air around so you can use it as an air fryer. If you're not cooking huge batches of things then that combo is probably the best bang for your buck/counter space, as far as variety of cooking methods.