I've heard nothing but great things about Ergo's. I really really want one. Baby Trekkers, Bjorns, Snugglis, etc. are not like Ergo's because Ergo's don't stress baby's hips and spine. The others do, and are not ergonomically sound. A baby sits in an Ergo, as opposed to hanging from its crotch in the others. Mei Tai's are good choice too for less money, if you don't mind tieing the straps yourself.