I think the guard is a bit better.I have been deployed with Air Guard guys and they liked it. You can deploy when ever you want too but you have more say so in it. I would look into the Air Guard and don't forget the Coast Guard reserves as well. The Guard is attached to the state vs the reserves is the government. I was active Navy and then NR and now active AF. I can say being stuck in Iraq was much better then being on a ship hands down. I did 4 years on a ship and they can have that mess.
Navy pros .....see a lot of places at a fast pace.
Navy Cons... LONG HOURS ,poor treatment,watches ,uniforms,fire parties ,standing duty ,deck evolutions,food(all this is more active duty ship board stuff)
Air Force ...much better chow halls, better working hours ,better treatment
(you are going to be deployed overseas in every branch now a days)
The AF is better as far as treatment and living conditions goes then the ship board Navy that I was in.
I have not been a ground pounder (Army/Marines)so I can not speak for them. The military was and has been the best thing for me hands down. Good pay,traveling and making life long friends.
Down side ,you spend LOTS of time away from family....
The gold goose of it all is the active guard positions but they are hard to get but those guys have it made.