I bought one when DS was about 9 months old, and I've never got too much use out of it to be honest, and we ended up buying an ergo as well which got more used. I dunno if it's because he wasn't a slingy sort of baby (he likes to be on the go all the time) or what, but I'm expecting DC2 in about 4 weeks and will be using a sling a lot as we haven't bought a double buggy.
So, would I be best off using my baby bjorn or ergo at the beginning, or would ellaroo fans recommend using it from birth? I did find it quite faffy to begin with but once I cracked it I quite liked it. Is it good for breastfeeding in? Will the baby be happy in it posture-wise?