My suggestions would be the F8F bearcat, which was used during the end ofthe war (I think) and the B-24, just because it was the most produced bomber during the war, and it was just neat looking too.
It woudl also be neat to maybe see the Gloster meteor, but I think it only went into service near the end of the war and mostly took out V-1's, so I don't know if it would be pertinent, but it would be neat.