The only thing with a one shouldered sling is that it is ONLY that - one shoulder, always. I am planning on using a ring sling for the first few months with the new baby, but I also have a mei tai, a few wraps and a few SSC's.

I have no problem buying second hand - I do it all the time!

But for a first timer I always recommend the Close carrier - but this also depends where you are.......... this may get a little hot for you if you are up north..................