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

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I have the Ninja DCT401 12-in-1 Double Oven and use it frequently. It does have two sections but they do different things. I rarely use both at the same time; usually I’m either baking on the top or air frying on the bottom.
We have a Ninja 12-in-1 double oven with FlexDoor. Love it. Our oldest has since moved out, but we were a family of 5, the oldest been a teen boy with a voracious appetite.
We have the Ninja Double Stack XL and love it. We use it more than the oven at this point. We pretty much only use the oven if it's something too big for the air fryer, like a large aluminum roaster.
We have a Ninja Double Stack XL Countertop Oven and Air Fryer. They cost about $300. Just my wife and I in the house. We love it. About the only time we use our regular oven is when we are making cornbread in a cast iron skillet or baking a big pizza.
I've got the Ninja dual oven with the little bitty top door you can open separately. I like it a lot.
Wir sind mit ner günstigen vom Aldi (glaube so 70€) angefangen um zu schauen ob es was für uns ist. Mittlerweile haben wir (auch zu Zweit) ne Doppelstock als XL von Ninja. Mit zwei Schubladen kann man gleichzeitig zwei verschiedene Sachen wie z.B. Hänchenschenkel und Gemüsebeilage machen. Ich würde immer darauf achten, dass man die Programme so einstellen kann, dassselbst bei unterschiedlichen Garzeiten beides gleichzeitig fertig ist. Und nie wieder zu klein, die Heißluft muss sich vernünftig verteilen können, sonst ist das Ergebnis schnell entäuschend.
The Ninja double stack XL was really big, it took up a lot of counter space I didn’t have. I ended up selling it and getting the Crispi Pro, which I love and it doesn’t take up my entire counter. I can’t speak to the Cosori, but I do really like the Crispi Pro. Seems easier to clean as well
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