I've used NuvaRing for over 4 years ~ LOVE IT! I always had a light period with no cramps or anything like that. The ring hasn't changed that. I think the only noticeable side effect I experienced recently is the inability to continue to wear contact lenses. My left eye has become extremely dry and no eye doctor could figure out why... I assume it's from the NR, though hard to imagine since I've been using it for over 4 years.
Well, seeing as that's my only complaint, I still think it's so worth it. I never used BC pills because I know I'd forget. The NR works great and I have never had any problems with it.