LoSeasonique
"I've been on this for over 3 years and I would say its the best one I've been on. 

Pros:

Dramatic reduction in pain from cramps. 



Con's: 

Nauseous on the first pack

Spotting during the first few packs

After 3 years, I get about 2 hours of spotting as my 'period'. Kind of unnerving when your sexually active. 



To me, the pro makes the con's worth it because my cramping was so bad it made me vomit from pain.  100% worth it to me."