We've got a Power Air-Fryer XL (Look for a 20% off single item coupon then go get it from Bed Bath and Beyond) and have had it for a few years. Love it, use it several times a week....
Frying times take a little trial and error, takes longer than an oil dryer, shorter than a regular oven.
We use it for frozen fryables (Fries, onion rings, cheese sticks, fish planks, etc. etc. etc. ) and the spousal unit likes to cook chicken breasts in it too.....
This is the one we've got:
https://www.bedbathandbeyond.com/store/product/5-3-qt-power-air-fryerxl/3295801/that is EXACTLY the one we have as well use it all the time works well and not hard to understand how to use it. We got ours near 1 year ago at Target on sale for around 60 bucks I think and use it weekly so it has not clunked out yet and most stuff takes 15-18 minutes tops unless frozen chicken, etc. WE even cut up a small pork loin and works great for that as well crispier outside yet moist and tender inside. I use it mostly for chicken strips and french fries, mozarella sticks, and easy quick meals.
It does reduce cooking time and heats up quickly and does a good job overall. Only negative thing is the black finish in a few small spots rubbed off cleaning it on the bottom of the black plastic on the inside. But, for 1 or 2 uses per week the last 50 or so weeks has held up well.
Personally I would get one but NOT too small5- 6qt. or so is about right for 2 people. I think the bigger units circulate the air movement better if say 1/2 full or so vs. smaller more cramped ones made for only 1 person.