I used the pill for years and stopped bc it made me a monster. The nuva-ring was better as it was a slow release of all three hormones (mono cyclic rather than tri-cyclic: three weeks, three diff hormones) but it took me over a year to conceive when I went off it (no period for 6 mos!). My husband doesn't want me on any more hormonal birth control and I'm not going back, so I suppose that lands me on the "crunchy" side of this issue. =)
I always heard that IUDs were dangerous, at least the original ones, and while I'm sure they've come a long way, most drs don't recommend them unless you're finished having your family due to the risk of infections and spontaneous abortions.
I was fitted for a diaphragm which seemed to be the best of all worlds. It's ok, I guess, but forget being spontaneous...and it was painful for me to take out.
We're TTC now, but up to present, we've been doing a very loose form of NFP - basically just pulling out. Now, this would seem careless, but as I said, we didn't mind if we got pregnant and so far, so good, but you know the joke. ("What do you call couples who practice the pull-out method? Parents!")
So while I would recommend a more natural approach to avoid the body's dependence on artificial hormones / production, I would thoroughly research this and make sure I was doing it as prescribed if I were to use it in earnest. If we're successful in conceiving this time, that will be our option for the future as I feel we'll probably be done expanding our family.