I just purchased my Ergo sport yesterday but waiting for it to arrive, so with any luck will get it either today or tomorrow. the reason I chose the sport was due to being more cooler to wear, the lightness of it as well as the support for the back. Also due to the others I have seen are from 3.5kgs and up and the ergo is from 3kgs (with the baby insert) My little Chloe is just under 3kgs now so I get to use it straight away when it arrives. I was going to go for the performance, but I didnt need that one as thats more for the taller people and well lets just say, Im not so tall. lol. I catn wait to try out my Ergo with Little Chloe or even miss V.