Mirena
"I took Mirena for 3 years and switch today to paraguard instead. Insertion wasn't too painful and hurt much less than the IUD I have now. The removal was actually hurt more) Anyways, the first year I had irregular periods, but no weight gain, no moodiness, no pain during sec, or lack of sex drive-  so that was great. The reason I chose to remove it, is that the last 6 months or so, I had much more spotting, I thought my periods would go away, but they never did, and it became highly unpredictable. I am hoping that if I have to have a period, I'd like to know when it is, even if it's heavier. I am now going to give the Paraguard a try and see how it goes, if the side effects are worse than Mirena, I will likely be switch back."