First decide between one basket and two. A single basket holds one large batch. The Philips NA352/00 gives two baskets that finish together. Only Nutricook gives a load guide, with chickens and fries.
Then look at power. Larger baskets draw more. The Philips dual basket lists the most, and the Philips oven lists the next. Check your home wiring and socket before ordering.
Next, compare the ranges. Nutricook and the Philips dual basket start low. Both KENT pages leave the range out. The Philips NA231/00 leaves out power, range and timer.
If a large basket is more than you need, the best 6 litre air fryer and best 5 litre air fryer guides step down. The best 4 litre air fryer and best small air fryer guides go smaller still. The best air fryer guide covers the full range.
A cook who wants one big basket has two KENT choices. The KENT Digital Air Fryer 7L and the KENT Digital Air Fryer 8.5L both list 12 preset menus and a keep warm function. The 8.5L has the bigger basket and the higher power rating.
A cook who roasts whole birds will look at the Nutricook 7.6L Air Fryer Slim XL. Nutricook says its basket fits two 1.2 kg whole chickens. The source is a global store page, so confirm the details with the seller.
A buyer who wants a window in a smaller basket can read the Philips Air Fryer NA231/00 6.2L page. Its touch panel lists 13 preset modes. The Philips Air Fryer Oven NA342/00 7.2L suits a cook who wants oven-style cooking, and it lists 16 functions.
Warranty is a gap for half the list. The two KENT pages and the Nutricook page do not state a warranty. The three Philips models give two years.
The pages say little about cleaning and cooking. Nutricook says the basket and cooking tray are dishwasher-safe. Philips says the oven-style unit suits dehydrating and fermenting curd. It also says the dual baskets cook two dishes together with synchronised finishing. The KENT pages mention a glass window with an in-built light, and the Philips oven page lists a 1.8 m cord.