I’d love to fly on the upper deck of a 744. Been on the lower deck on 3 occasions but not upstairs.
Wouldn’t lose any sleep if I don’t fly on a 737 again- slow, cramped things. Much prefer the A320.
I’d love it if someone bought me one of those red letter day packages to fly a Mig 29, or even better that big Russian military cargo plane where you achieve zero gravity as it free-dives. 🙂