Single basket vs. dual basket — pick by household
A single basket (Cosori TurboBlaze, Ninja AF100C, Cuisinart ClearView, Gourmia) heats one chamber, so it cooks faster and is the right call for 1–3 people or anyone who mostly makes one thing at a time. A dual basket (Ninja DZ201C, DZ401) runs two independent zones so you can cook a main and a side that finish together — great for families — but be aware dual-zone cooking is noticeably SLOWER than a single basket (owners routinely report roughly double the time). If speed matters more than cooking two foods at once, buy a single basket.
Why 450°F and fan speed matter more than wattage
The two specs that actually predict crisping are the maximum temperature and airflow, not the headline wattage. A 450°F ceiling (Cosori, Ninja duals, Cuisinart, Philips) sears and crisps far better than a 400°F cap (Gourmia, Ninja AF100C), and a high-speed fan like Cosori's 3600 rpm TurboBlaze drives more even browning. Two units can both draw ~1500–1700W and cook very differently — always compare temperature range and fan/airflow claims first.
Basket material decides how long it lasts
The number-one durability complaint for air fryers is coating failure. Ranked best to worst for longevity: borosilicate GLASS (Cuisinart ClearView — can't flake, easy to clean, PFAS-free) > STAINLESS STEEL baskets (Ninja DZ401, Philips) > ceramic-coated nonstick (Ninja AF100C — several owners report chipping after weeks) > basic PTFE nonstick. If you air fry often and want it to last, lean toward glass or stainless; if you buy a coated basket, use silicone tools and avoid metal utensils.
Capacity guide: match quarts to your table
Rough sizing: under 4qt suits 1 person; 4qt (Ninja AF100C, Cuisinart ClearView) suits 1–2; 6qt (Cosori TurboBlaze, Instant combo) suits a small family; 8qt (Ninja DZ201C, Gourmia) suits a family of four; and 9–10qt (Ninja DZ401, Philips) handles large families or batch cooking. Remember that a dual-basket unit's total (e.g. 8qt = 2×4qt) is split across two chambers, so each side holds half — great for two dishes, not for one giant one (use Match Cook to combine). Nothing in this class will take a holiday turkey, so if that is the job, look at an electric roaster oven instead.
Watch for grey-market and cross-border listings
On Amazon.ca some air fryers are US-market SKUs shipped across the border, which can mean no honoured Canadian warranty, missing bilingual manuals, and inflated prices. Red flags we screen for: a price ABOVE the item's own 'list' MSRP, a 'Us Model' colour/variant label, USD pricing, a hidden 'See price in cart' price, or only third-party 'See All Buying Options' with no Amazon buy-box. Stick to listings clearly sold in CAD with a normal buy-box, and prefer models labelled 'Canadian Version' with brands that support Canada (Cosori, SharkNinja/Ninja in Mississauga ON, Cuisinart, Instant).
Combos and steam models — know what you're buying
Multi-appliance units can be great value if you'll use every mode. The Instant Duo Crisp is a superb pressure cooker that also air fries — but its crisp chamber is small and it can dry out meat, so buy it to replace a pressure cooker AND a fryer, not as a dedicated air fryer. The Philips 5000 adds steam, which genuinely produces tender-inside/crispy-outside results and can retire a steamer or steam oven — worth the premium if versatility is the goal, overkill if you just want fries. Treat a listed "dehydrate" mode with the same scepticism: it works for a tray of apple slices, but fruit leather or a real batch of jerky needs the low, even, all-day airflow of a dedicated food dehydrator.