I started my first planted tank in December 2013. With my first plant additions came my first pond snails. I am one of the "Oh no what do I do to get rid of them!" I wanted a "perfect" tank and didn't want snails. Well I educated myself about them through the internet and as you have stated they keep themselves in check. I have a population the ebbs and flows.
I would however, like to add a decorative snail that would not attack my plants. I was thinking of adding some ramshorn snails but I have read conflicting reports about them eating plants.
Thanks for your help in shedding some light on this misunderstood aquarium inhabitant.