I think that there is a pill out there for almost everyone. I started taking Ortho-tri-cyclene about three years ago. After about a year, and some weight gain, I started to become posessed by hormone demons in the third week of the cycle. These pills have a different dose each week, and the third was just a little too much for me. I called my Ob/gyn and said, "If you don't fix this I will kill myself and take many others with me!" Yes, I was so crazed I actually said that.

Since then I have tried 4 other pills/doses and have finally found one that works for me. I am in it for the long haul (no kids for a while), so I had to find something I could stick with.
I wish I could bring myself to IUD, but a friend of mine is one of the horror stories you hear about, and I'm just too chicken.