Depends what you want out of life. The RAF future is Eurofighter and JCA, neither of which has a second seat. So unless you fancy Nimrods, or Transport aircraft, you will not get to fly fast anything. The FAA can offer a variety of rotary wing, but again, no fast movers.
If you want to fly, and you don't care what, then the question you have to answer becomes "how much time do I want to spend away from home?". If the answer is not very much, join the RAF. Otherwise, join the best, like what I did
