Ninja
Foodi Dual Zone Series
Dual zones excel, but bulky with small baskets.

Running these analyses costs money. Buy through my links to help keep lights on! I may get a small commission.
I don't know if it's BIFL, but the Cuisinart TOA-60 is one of the best purchases I've ever made. It or the virtually identical models regularly go on sale for $99.00. It's all simple mechanical parts so there is basically nothing to fail. It's a great toaster oven AND air fryer. I've used it daily for at least 10 years now, probably closer to 15 and apart from the fact you need to clean it periodically, it's still works like brand new. CTOA 122 is the same exact model except it's sold exclusively at Target. TOA-70 is almost identical, it just comes with a grill plate. I won't lie to you and tell you there are not better air fryers or even combination air fryer toaster ovens out there, but this little guy is reliable, and punches way above it's weight class. My only complaint with it is that there is an independent toaster dial for some reason that only works if all the oven related dials are turned off. It's easy to try to turn this on and not realize nothing is actually cooking because the other settings are still set up for oven or air fry modes.
I have a convection oven the size of a toaster oven and it has an air fryer setting. It's frocking amazing! I used it every single day. This is almost identical to mine. https://www.canadiantire.ca/en/pdp/cuisinart-convection-air-fryer-toaster-oven-w-7-functions-stainless-steel-0439587p.html
Have the same, most used cooking appliance in the kitchen.
I have the TOA-60, use it as airfryer and oven probably 5 days a week. Ive had it for 5 years and it still works great but there is a lot of oil buildup inside that is impossible to fully clean/remove so there is a bad smell and light smoke each time I use it. I am looking to replace it, but will probably get the same thing as the Breville does not seem to have any major advantages for the additional $100.
I have this and love it. Does everything [Cuisinart air fryer/toaster oven](https://www.cuisinart.ca/en/air-fryer-toaster-oven/TOA-60C.html)
I have a Cuisinart, which I love. It has toaster, bake, broil, convection and air fryer modes. It's generally been a champ. I'm not sure which model, but it has analog knobs rather than electronic controls, and I love that.
Ninja
Foodi Dual Zone Series
Dual zones excel, but bulky with small baskets.

COSORI
Turbo Blaze 9-in-1 6QT
Effortless to clean and quiet, but no viewing window.

Ninja
Foodi Air Fry Oven Series
Unique flip design, but shallow and air frying debated.

Typhur
Dome
Self-cleaning and quiet, but expensive with shallow interior.

Breville
Smart Oven Air Fryer Series
Great oven replacement with large capacity, but poor air frying.

Ranked #1
Ninja - Crispi Pro 6-in-1 Countertop Glass Air Fryer

Ranked #1
Breville - Smart Oven Air Fryer Series

Ranked #1
COSORI - Turbo Blaze 9-in-1 6QT

Ranked #1
Ninja - Crispi Pro 6-in-1 Countertop Glass Air Fryer

Ranked #1
Ninja - Foodi Air Fry Oven Series