I have been on the NuvaRing for about 6 months now - after getting pregnant on the Diaphragm AND on the Copper IUD. I was very against hormonal birth control, but the non-hormonal options do not work for me. I have been quite happy with the NuvaRing, except for my complete lack of a libido. I am very happy to have read that I'm not alone in experiencing this - I didn't know if it was the ring or what, because they do not list that as a side effect in any information packet that I've read.
Although this is a huge bummer to have no libido (definitely considering trying another birth control form), I have no other qualms with the ring - my period is lighter, I am not nearly as moody, no cramping at all... pretty nice.