Yep - the little man is getting too heavy for the BB too (and he is only 8kg). I find the peanut sling fine for short trips and distances - great for a hip carry and front facing me when he is tired and needing a sleep. Ergo is great for longer distances and he lurves the back carry - thinks it's a horsy ride with the initial jiggling The HAB is surprisingly good for forward facing carry as well as the facing in one. I haven't tried the pikkolo so I can't say how they are - DH would shoot me if I bought another one