Ninja Foodi MAX Dual Zone AF400UK (9.5L)

The AF400UK wins on balance rather than any single spec. Its 9.5L capacity splits across two 4.75L drawers — larger per zone than the Cosori's 4.25L baskets (#3) — each big enough to take a small chicken, so you can run two different foods at once or use both drawers as one big batch. Six cooking functions cover Max Crisp, Roast, Bake, Reheat, Dehydrate and Air Fry, with Sync & Match to finish both sides together, and the crisper plates and drawers are dishwasher-safe. At around £165 it undercuts the convertible FlexDrawer (#2, ~£260) while keeping true dual-zone cooking, and reviewers consistently rate its results among the best in class. Choose it if you want the most capable everyday dual-zone cooker for a family of four to five; skip it if you regularly cook one large joint that needs a single open space (the FlexDrawer) or want to spend less (the Cosori or Tower).