Favorite form of birth control?

I'm wondering if anyone has insight they would be willing to share regarding their experiences with different types of birth control.  I'm 21 years old, in a commited monogamous relationship with my boyfriend of two years, and we are both disease-free.   
I was on the pill for a few months about a year ago and didn't really like it; it threw my cycle way out of whack (was on it for about four months and must have been bleeding 40% of the time) and also experienced fainting and headache, so I'm not really looking to go back down that road.  If anyone has any other advice I would appreciate it!