I've read everything Barrett Tillman has written, great author IMO, his book "Warriors" featuring the F20 was a favorite of mine in high school. 6th Battle was a good fiction book as well, his non fiction stuff is excellent IMO. Thanks for that post Widewing, I'll add a bunch of those to my list for the new year.
A great aviation author that doesn't get much attention is Mark Berent. He has a 5 book series featuring the Vietnam war, a lot of his experiences are woven into the story, and they are all excellent. He has a few non fiction books as well. Rolling Thunder is his first book, Steel Tiger the second, and they are worth every penny.