Well my friend had a Moby (UK brand of HAB style wrap) and I had a CloseCarrier and I ended up wearing my same size and weight baby for longer as her baby started to sag a bit whereas mine was still as secure. The only reason I stopped using my CC (when he was 18 months old) was I started using a ring sling as I could do hip carries and he just felt too big for front carrying in the CC. I also used to wear my CC almost all day and only popped him in when he needed to.