If the question is "best looking," my vote goes for the F-11F Grumman Tiger in Blue Angels livery...

My father was in Naval Aviation during the brief period when the F-11F was being used. He recalls it being something of an underpowered dud, not altogether willing to get airborne on a hot day on the South China Sea.

The Blue Angels were still flying them when I was old enough to remember them doing so.

I've got a soft spot for "Heinemann's Hot Rod," too but they don't count in this discussion. The ol' "Scooter" to me is the second best looking military jet flown the U.S. forces.

Kind of off the subject, but I knew a fellow who had seat time in both the F-8 Crusader, which I think is a rather unstylish thing to look at, and the F-4. He described the F-8 as a "sports car with wings" and favored it over the F-4. The F-4 Phantom was an intimidating looking bird, for sure.

If I could have stick time in any U.S. military aircraft, the one I'd want the stick time in is the A-4 Skyhawk.