Well, just to be clear I haven't used each feature, but very excited that Frigidaire offers four options in the Wall Oven/Microwave/Convection/AirFryer.
The microwave is easy to use, gives you great versatility with the timing feature. 5,10 15 seconds allow me to cook scrambled eggs just right with the adjustable power strength. 
The oven is a nice size and has a slide out rack to make it easier turning and checking food while cooking.
Air Fryer is a wonderful idea.  I wish it had come with the rack and basket, but I ordered it after the fact.  It will be my next project to try French fries and I will update my review given the opportunity.