Ninja
DoubleStack 10 QT XL SL400/401/451

Ninja
Ninja

Ninja

We have this model. Can confirm it cooks unevenly. You can counteract it if you’re mindful to turn the food through the cooking process, but it can be a pain
Ninja air fryer with 2 compartments. I’ve baked a cake in an air fryer.
Ninja seems to have a good strong fan system that circulates the air well. I prefer two baskets that have coordinated cooking.
Dude I’ve been a skeptic for years and I finally got one the other day, ninja duel basket and it’s absolutely awesome being able to choose 2 different modes or times and temperatures even if just cooking for 1
Got the uk twin draw so like 2400+ watts, it’s great, very even and fast cooking on either draw
I have a ninja dual and I love it
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.
Bought the ninja 13-in-1 flip toaster oven second hand for $100 and it had replaced my microwave and dual tray ninja air fryer almost entirely. Actually, I haven't used the air fryer since I bought it, which was four month ago. The microwave I use to reheat leftovers, like soup, mash potatoes, that won't reheat well in the toaster. It has also pretty much replaced my conventional oven except for when I'm doing big batches or baking something that won't fit, like a cheesecake.
It's not the best. Definite differences in heat levels between the front and back of the drawers so you have to move things round more than you ah pull. Zero preheat time though and it's got a small footprint for so much capacity.
Top recommendations from others in the same boat

Top pick
Ninja - Crispi Pro 6-in-1 Countertop Glass Air Fryer

Top pick
Breville - Smart Oven Air Fryer Series

Top pick
COSORI - Turbo Blaze 9-in-1 6QT

Top pick
Ninja - Crispi Pro 6-in-1 Countertop Glass Air Fryer

Top pick
Ninja - Foodi Air Fry Oven Series