So I bought the Ergo Performance and I really like it!
I don't know what the other ones are like (Sport and Original) but this one is really light weight and comfy! From general items pecs Performance is even lighter than the Sport!
DD also seems to really like it! I haven't tested the back position but we did the front as well as the side. The front one is much cosier and the side one is really good if you want your LO to be able to look around more.
It's true, it's not meant for the baby facing forward and I was worried about that as DD loves to look around, but so far we haven't had the issue. As mentioneda above the hip carry position kind of takes care of that. It just looks like she's really comfy in there in comparisson to kids I see in Baby Bjorns and facin out. Their legs always dangle so much where as with the Ergo the baby kind of sits in there and it's just much more natural for the baby.
So overall, I like it and would definitely recommend it!
Re: Ergo Performance
i agree! they look uncomfortable to me!
Baby 2 EDD 7-18-14