Sasa, I've not used a HAB itself, but am familiar with stretchy (knit fabric) wraps in general. Whilst many people find that a stretchy wrap is fantastic for newborns and smaller bubs (and certainly has a greater longevity in both the amount of time it can be comfortably worn for and the weight it can carry compared to the Bjorn), they are often found to be not as supportive for older babies because of the stretch factor (resulting in a very saggy baby).

I'm not saying this to discount what you are saying about HABs being more suitable for a wider weight range than Bjorn, because this is true, but to inform people who enjoy wrapping their babies and don't really find soft structured carriers like an Ergo appealing, but are finding their HAB's less supportive that there are more supportive wrap options available - woven wraps. Brands like Vatanai, Girasol, Storchenwiege, Didymos make wraps from cloth specifically woven for baby wearing.

They are a little harder to get in Aus (you won't find them in stores), but can be ordered directly from the manufacturer, second hand - thebabywearer and baby carriers downunder both have for-sale-or-trade boards (as well as a wealth of information), or baby carriers downunder have instocks in some brands and do occasional co-ops in others.