Look at capacity, temperature range, and the variety of cooking functions each model offers. Also consider the type of heating technology (TurboBlaze, Max Crisp, or infrared) and any special coatings like ceramic that affect cleanup and durability. Finally, evaluate ease of use features such as digital controls, preset programs, and accessory bundles.

Cosori’s TurboBlaze uses a 3600 rpm fan and a 90°–450°F range, delivering fast, even cooking for larger 6‑quart batches. Ninja’s Flip model focuses on space‑saving design and OVENCRISP infrared heating, which excels at crisping but offers a slightly lower maximum temperature. Both provide multiple functions, but Cosori gives a higher temperature ceiling and a larger basket for family meals.

A larger basket, like the 12‑quart Chefman or the 8‑quart Ninja DualZone, lets you prepare multiple dishes or bigger portions in one go, which is handy for gatherings. However, bigger units take up more counter space and may consume more electricity. If you mainly cook for two‑four people, a 5‑6‑quart model such as the Cosori or Ninja Pro XL offers a good balance of size and storage.

Ceramic coatings, found on the Cosori TurboBlaze, are heat‑resistant, durable, and tend to be free of PTFE/PFOA, reducing the risk of off‑flavors. Traditional non‑stick metal trays are often less expensive but may wear faster and require gentler cleaning. If you value long‑term durability and easy cleanup, ceramic is the preferable option.

Multiple fan speeds, like Cosori’s five‑speed system, give you finer control over airflow, which can improve texture for delicate items such as pastries or ensure extra crispness for fries. Models with a single speed still produce good results but may require longer cooking times or manual adjustments. More fan speeds generally translate to greater versatility across recipes.

Dual‑basket units, such as the Ninja Foodi 8‑quart DualZone, let you cook two different foods simultaneously with independent temperature controls, saving time and avoiding flavor transfer. This is especially useful for meal‑prep or when you need a side and a main at the same time. Single‑basket models are typically less expensive and take up less space, so the choice depends on how often you need simultaneous cooking.

Accessories can enhance convenience and expand functionality. Parchment liners (e.g., BYKITCHEN sheets) keep the fryer clean and simplify cleanup, while a rotisserie spit (found on Chefman) adds a new cooking method for whole chickens. Ensure any accessories are compatible with your specific model’s basket dimensions before purchasing.

Higher‑priced models often include advanced tech (TurboBlaze, Max Crisp), larger capacities, and more accessories, which can reduce the need for additional kitchen appliances. Budget‑friendly options like the NutriChef 5.8‑quart still deliver solid performance but may lack premium coatings or dual‑zone cooking. Consider the total cost of ownership, including energy use, durability, and how many cooking functions you’ll actually use.