I never owned a deep fryer, but last year I bought a Philips Airfryer XL. It's OK. Foods tastes different than from a deep fryer, often dryer. It's like a hot air oven, the air moves very fast. When it gets used it's often for potato croquettes. I always keep some in the freezer. I prefer fries from a deep fryer.
The Philips XL has a problem specific for that model, it tends to smoke. A special lid over the food seems to help, but models from other brands don't seem to have that problem.