I've always knew that I wanted to go to a service academy since about my 8th grade year in middle school. During my senior year of high school I applied to 6 schools among them was USAFA and USNA. I was fortunate enough to get into both, so I really chose USNA after visiting both schools. I went on a CVW at USNA and on an FVE visit to USAFA. What really stood out on my USNA visit is really the culture here and how the Mids interact with each other. Another reason is service selection, I REALLY want to fly. But, if that doesn't work out for some reason, there is a lot of other warfare communities that I would like to commission into in the Navy, and I couldn't say the same about Air Force if I didn't get pilot. So those are my reasons, everyone has their different reasons for choosing one SA over another. I would just recommend visiting the schools and see which one you could see yourself spending the next 4 years at, and look at life beyond graduation and see which service is more appealing to you.
Actually my time is very limited as well. We just had the long weekend and had time to post for once so I thought I would answer a few questions. Today was the first time I actually got on here since I day back in June.