The Breville Smart Oven Air Fryer Pro wins for users wanting an all-in-one replacement due to its 11 functions and 1.0 cu ft capacity versus the Ninja's 5.5 qt basket limit. Ninja AF161 Max XL scores higher on value and portability with faster preheats and smaller footprint. Both cite strong performance in air fry mode per CNET and Wirecutter side-by-side tests but serve different kitchen roles.