I am not against progress, but........
If it isn't broken, don't fix it........
The F-15 EX is progress - great......
I know nothing about the F-35 - but it doesn't look right......
The F-16 looks right - and when I flew it, I loved it.......
If an updated F-16 at the relatively low cost it attracts can be improved on what it already is, then it gets my vote.......
Of course, my vote is worth nothing............!!