Do you think 4.75 Airport grade driveway filler sealer $23.96 is any better than
Gardner 4.75 blacktop driveway filler sealer at $31.00

There are lots of brands that make a "airport grade" any one in mind.

Here is a review of airport grade on YouTube
https://www.youtube.com/watch?v=BxpSlgQLaPo

Most did 2 or 3 coats for coverage.

Letex-Ite brand