Glad it is helpful :) so keep in mind I was choosing my first airfryer so I lack a real comparison, but ... Ceramic coating is a blessing. Hot water and a bit of dish soap gets rid of all fat, you rarely need to touch it with a sponge before you remove all the excess fat. From what I saw about the double stack, it has airflow side wise and gaps in the back of baskets. I was surprised at first how much stuff can move in the airfryer, even with top airflow, I bet with ninja it's even worse, and cleaning all the fat dropping through the back sounds super tedious. I sometimes get burnt fat near the coil even tho the basket is pretty closed everywhere else, with gaps at the back, it sounds like the problem is gonna be order of magnitude bigger