As always, you have to decide if you're willing to be an officer first and pilot second -- that's the risk you're going to take any time you start playing the "I wanna be a military pilot" game.

If you're not willing to join the military and do a tour as something other than a pilot (because it's a real possibility that after the time when you have to commit, the service changes its mind about what it wants you to do), then you really shouldn't take the chance.

That being said, I personally think ROTC is the best route to an officer commission, especially if you can pick up some scholarship money in there. Unlike Ryan1234's experience, my ROTC Detachment was more like a fraternity than an AF-wannabe douchebag club (same thing?). My experience was that it blended well with college life, and as we got closer to commissioning, the time/energy commitments increased along with it.