Okay, all kidding aside; the difference in USAF pilots vs USN/USMC...from an AF pilots' perspective.
USAF pilots are many, varied, and very "community" conscious. Bomber folks are bombers, fighters, etc. ALL think they're the end-all of the AF and critical to the mission. And...they are. USN/USMC pilots are VERY similar (this from flying with them) in basic life: they are guided/led-by-the-nose by something called NATOPS. I've heard many an angry USN/USMC aviator saying very unkind things about NATOPS. They all like to tell everyone they're amazing because they land on ships. Okay...that's a pretty amazing thing but lets be honest, it's taught to an awful lot of folks so...
Now...all MY kidding aside: USN pilots are outstanding at fleet air defense! They will pretty much do anything to defend their fleet, and they're VERY good at it! In an air-to-air "contest" they are very good at the art of aerial combat. USMC pilots...they are 100% dedicated to the marine on the ground. I don't care if they're flying C-130's hauling gear to the front, or flying air-support, they're 100% dedicated to their marines on the ground. And they're pretty excellent at that mission! Marines know if they're in combat and they hear a jet; it's most likely theirs and not the enemy's.
USAF pilots...they're the big-boys on the block. They have all the missions; and they support all the forces, and they know it. They know if their tankers don't fly, missions don't get accomplished. If the bombers can't go, then other assets must be called in that aren't as capable. If the air bridge goes down...well, a lot of army soldiers and marines will not get the equipment they need.
In other words, while we'll go the bar and really give each other what-for about "who's the best" and such...we know we're all members of the same team, same profession (aviators) and are all skilled at what we do.
That's my way of saying you won't go wrong with any of the three. And in honesty...I've got lots of good things to say about Army drivers too!
Steve
USAFA ALO
USAFA '83