As a mom of eight children, all nursed and baby-worn, I've tried several baby carriers over the years.  The cheap ones are simply not worth the money, and after going through several of them I bought a Bjorn when my oldest was still a baby.  I loved it and still think that it is a GREAT carrier, but a couple of babies ago I switched to an Ergo and never looked back.  I had shoulder surgery between children, and even though three years went by before having the next baby, I found that the Bjorn hurt my shoulder once the baby was a couple of months old.  I decided to try the Ergo since so many...