If you got the scratch, im sure any commercial airfryer will outlive the black plastic globs you can get at walmart.
If you really got the scratch…https://www.gofoodservice.com/c/air-fryers
Probably not the response you want, but in my experience if you have the room and extra to spend I would highly recommend a second oven with convection. I picked one up for ~$50 at an auction and apart from the install and overhead from upgrading electrical I found it killer for when I have a lot to cook or there are multiple people interested in using the kitchen.
I think the air fryer appliance was designed to sell more small appliances.
Don't get me wrong, I adore my air fryer and own a big stupid oversized Ninja air fryer with a grill grate in it that my family uses daily.
But IMO the air fryer is very modern and was designed from the start to be a consumable product and I'm sure my Ninja will die within the next few years.
I've also thought about bying a new oven with air fryer functionality built it, but my spouse pointed out that I'll have to buy a whole new oven when that breaks...
That's the feeling I get about a lot of these smart applicances, kinda starting around the time of the instant pot fad. I love my instant pot though, and it's lasted years. But in terms of repairability, I don't know what I'd do with it if some internal electronics stopped working
i think that the only way to get anything that lasts would be to get commercial grade stuff, at least commercial countertop convection ovens will likely do the same thing as an air fryer
For practical, durable and quality made products that are made to last.