I've got a Gowise Air fryer and I love it. I use it practically everymorning.
I've been making these little breakfast burritos and I have one every day. I make a bunch of them and freeze them. 2 minutes in the microzapper at 50% power to thaw, a light mist of spray, then 10 minutes in the air fryer at 400 and I get a nice crispy little breakfast treat.
I generally put some pintos, eggs, salsa, and whatever other leftovers we might have had in them.
The fryer also does a great job on frozen fries and tots and the like.
I'll admit, that's about all I have used it for. Way easier than heating up a pot of oil. Lets face it, I like fried foods and if I can enjoy the crisp and crunch without all the oil, I'm all for it.
Basically, it's a little counter top convection oven. It just whips super hot air around the stuff that's in there.
Wet stuff doesn't work so good, so, like batter dipped things are pretty much out, but anything else that fairly dry is game.
And you can use it for roasting things, they say, but I have no experience doing that.