For several years now,I have a different model of Ninza and could not be happier with it
I got this model
Amazon.com
But if you dont need the thermometer (which I almost never use, you can get this model for $134 less.
Amazon.com
Dont listen to Cujo about the french fries , and for that matter anything else LOL
He is right that the air fryer is just a glorified small convection oven, but if designed right the hot air circulation makes ir cook and crisp food a lot faster, that's why most air fryer designs are circular,
My air fryer make perfect French fries every time, what you need to do is get an oil sprayer
Amazon.com
and spray the potatoes with olive oil, half way through, tosh them around (the potatoes) and continue, perfect every time.
If you like french fries and you don't already have one , get a french fry press, simply wash a potato put it in the press,and squeeze. Voila french fries ready for cooking in a second.
Amazon.com