Ninja Air Fryer DoubleStack XL, 10 Qt, 6-in-1, Deep Grey, SL401

Why it's worth it

Ninja stacks two independently controlled baskets instead of setting them side by side, so you get 10 quarts of capacity in a body about 40% slimmer than a standard dual-basket fryer. Two 5-pound chickens fit at once, which covers dinner for eight.

Picture a normal Friday: wings for the kids, salmon for the adults, and no oven space left. The DoubleStack runs each basket at its own temperature and time, and Smart Finish lands both on the table together. Match Cook copies one setting across both zones when you just want all 10 quarts doing the same thing. Two stacked racks per basket mean four foods can go at once.

The stacked layout is the real reason to pick this over a side-by-side. TechRadar puts the usable capacity gain at roughly 50% versus a conventional dual-zone fryer with a similar footprint. It still slides under standard cabinets. If your counter is deep but narrow, this is the shape that fits.

From our review of 7 ninja kitchen appliances

What we like

• +Picture a normal Friday: wings for the kids, salmon for the adults, and no oven space left
• +The stacked layout is the real reason to pick this over a side-by-side
• +Crisping holds up on both levels
• +It's a lot of machine for two people

What to know

• –It's loud. Owners raise this again and again — a full 10-quart cycle drowns out conversation, and a few units have arrived with…
• –The buttons need a firm press, which is genuinely annoying when your other hand is holding a hot basket