1
How about a BIFL Air Fryer
(sh.itjust.works)
For practical, durable and quality made products that are made to last.
Probably not the response you want, but in my experience if you have the room and extra to spend I would highly recommend a second oven with convection. I picked one up for ~$50 at an auction and apart from the install and overhead from upgrading electrical I found it killer for when I have a lot to cook or there are multiple people interested in using the kitchen.