I was on the pill for a while, then switched to the Nuva Ring. the Ring was very convenient, and reliable - but I lost all sex drive. So I stopped recently. I decided to get fitted for a diaphram, which the midwife had me practice before I left the office. Damn thing practically killed someone as it shot out of my fingers like in that lobster scene in Pretty Woman (with Lobster, not a diaphram).
Ok bad analogy - and I am exagerating a little. The sucker is pretty slippery when you put all that gunk on it though. I've had it for 3 weeks now, and I'm still afraid to try it.

Let us know what you learn. There are so many different methods. My midwife also said that using a calendar to keep track of your ovulation time - is effective - if you are religious about it.