Ninja
Foodi Dual Zone Series
Dual zones for smart cooking, but baskets are small.

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I had a reg 8 qt air fryer for a few years. Just replaced it with this [Ninja 6-1 flex basket](https://a.co/d/01RJApPx) about 1.5 yrs ago. I love it. I can do 2 small things or one large thing. There is a slight bleed in temps between the 2 baskets, but not majorly so. Ended up getting my sister and mom the same one for Christmas a year ago. We all love it.
Ninja Foodi Flexdrawer. I use it daily and often even more than once a day. I rarely use the oven, toaster or cooking plates anymore since I have this great AF. I mostly cook for 2 persons but of course can be used for bigger meals as well. I even bake my bread in it. Best purchase in years.
I can recommend the Ninja Flexdrawer ones. You can use it as two separate drawers or one big drawer. I rarely use it as one big drawer but it’s very handy to have the option.
Ninja dual zone flex basket. You can combine both baskets into a single large size, smart finish. Excellent flexible cooking.
I cook for a family of 5 and I've owned both toaster ovens and air fryers and I've settled on the ninja air fryer with a removable divider. I can cook two different things at once, or take out the divider and cook a large batch of proteins or veggies at once. It's the size of a regular toaster oven but seems to have a larger capacity. My microwave is a convection oven and we honestly just use the air fryer for everything these days.
The stacked air fryers blow heat from the back side instead of from above like every other air fryer. It usually results in uneven cooking unless you regularly rotate the food. The Ninja Dual Zone is probably the most popular air fryer ever. I have the Ninja Flex Basket which is very similar and it works great. High quality brand. The window thing seems cool but it's just as easy, and actually better, to just pull the basket open and look.
The stacked air fryers blow heat from the back side instead of from above like every other air fryer. It usually results in uneven cooking unless you regularly rotate the food. The Ninja Dual Zone is probably the most popular air fryer ever. I have the Ninja Flex Basket which is very similar and it works great. High quality brand. The window thing seems cool but it's just as easy, and actually better, to just pull the basket open and look.
Ninja
Foodi Dual Zone Series
Dual zones for smart cooking, but baskets are small.

COSORI
Turbo Blaze 9-in-1 6QT
Quiet, easy to clean, but lacks a viewing window.

Ninja
Foodi Air Fry Oven Series
Flips up to save space, but shallow and air fries poorly.

Breville
Smart Oven Air Fryer Series
Oven replacement; spacious, but air frying and cleaning divide users.

Typhur
Dome
Self-cleaning and quiet, but expensive with shallow interior.

Ranked #1
Ninja - Crispi Pro 6-in-1 Countertop Glass Air Fryer

Ranked #1
Breville - Smart Oven Air Fryer Series

Ranked #1
COSORI - Turbo Blaze 9-in-1 6QT

Ranked #1
Ninja - Crispi Pro 6-in-1 Countertop Glass Air Fryer

Ranked #1
Ninja - Foodi Air Fry Oven Series