The Ninja DZ201 and DZ550 are both dual zone air fryers, which means that they have two independent cooking zones. This allows you to cook two different foods at the same time, each with their own temperature and time controls. This is a great feature if you want to save time and cook multiple dishes at once.

Both air fryers also have a temperature range of 105°F to 450°F (DZ201) and 105°F to 400°F (DZ550), which gives you plenty of flexibility when it comes to cooking different types of food. They also have a digital display that shows the cooking time and temperature, making it easy to keep track of your cooking.

In terms of accessories, both air fryers come with a crisper plate, a multi-layer rack, and a broil rack. These accessories are dishwasher safe, making cleanup quick and easy. They also have a "Keep Warm" function, which allows you to keep your food at the ideal serving temperature until you're ready to eat.

When it comes to capacity, the DZ201 has a larger 6-quart basket, while the DZ550 has a smaller 4-quart basket. If you have a larger family or like to cook larger quantities of food, the DZ201 may be the better choice. However, if you have limited counter space or only need to cook small quantities of food, the DZ550 is a great option.

One of the key differences between the two air fryers is their design. The DZ201 has a sleek, modern design with a brushed stainless steel exterior, while the DZ550 has a circular shape and a matte black finish. This is a matter of personal preference, and you may prefer one design over the other.

Another difference between the two air fryers is their temperature range. The DZ201 has a higher maximum temperature of 450°F, while the DZ550 has a maximum temperature of 400°F. This may not make a big difference for most cooking needs, but if you need to cook at higher temperatures, the DZ201 may be the better choice.

In terms of price, the DZ201 is more expensive than the DZ550. This is due to its larger capacity and higher maximum temperature. However, if you don't need the extra capacity or higher temperature, the DZ550 is a great option at a more affordable price. You can also check the best deals of ninja DZ201 and DZ550 on blackfridays.

In conclusion, both the Ninja DZ201 and DZ550 dual zone air fryers are great options for anyone looking for a versatile and efficient air fryer. They both have similar features, including dual zone cooking capabilities, a range of accessories, and a "Keep Warm" function. However, they differ in capacity, design, and temperature range. Consider your individual needs and preferences when choosing between the two air fryers.