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

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I have the Ninja DCT-451 toaster-air fryer double oven and love it. I've used most -- but not all -- of its functions. This week I roasted chopped walnuts in the lower oven, hastened the ripening of 4 bananas in the upper compartment, and then baked a banana walnut loaf cake in a 5" x 9" Le Creuset enameled cast iron loaf pan in the lower oven. Before this month, I had never baked a cake in my prior eight decades. My friends and I agreed that the banana walnut loaf turned out delicious. I frequently use the air fryer function and its basket to cook many items and have been pleased with the results. That being said, I have no experience cooking with a dedicated air fryer, so I cannot compare the two approaches. A bonus point is that this device uses a lot less energy and generates considerably less heat than using my regular large oven.
I've got the Ninja dual oven with the little bitty top door you can open separately. I like it a lot.
Look at the Ninja Crispi Pro models that have glassware baskets. They are pretty good. Much easier to clean and you open them up less to check the food because you actually see your food. I have one and like it more than my other model Ninja that is a 9 or 12-in1 thing
Can’t say I’ve tried any others but I’ve never had any issues with my Ninja. I have the one that’s stacked instead of side by side to save counter space and I love it. Only complaint is the cord is a bit short.
I have ninja dual stack and it's a life saver. I can cook 2 things at once and not having to be constantly putting things in the oven and checking on them. It has the functions to match the cooking time for things to finish at the same time and you can have 2 layers in the same basket. It cooks much faster than the oven does. It ended up being smaller than I expected, but fits more than what I expected. Bonus function is not heating up the whole house just for a meal, like the oven does. I love that I'm not a sweaty and smelling like a pig after making dinner. I put my air frier close to the kitchen fan and turn it on. I should have bought it sooner. PS: watch out the air frier exhaust. Mine melted a cheap toaster that's encased in plastic.
I got that stacked Ninja and ended up giving it away and buying a traditional bucket style instead. The heat elements in this come from the back, not the top. This creates a few problems like juicy stuff getting the back dirty and spilling, not being able to properly “shake the basket” since the holes are on the back. Each basket is also pretty small, might work for you but did not for me. Another slightly annoying thing is that it also wont stop cooking automatically if you remove the basket, you need to press the “stop” button. And it also has bo preheat timer. Meaning if you want to preheat it you need to do it the old school way and just guess when its ready.
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