With our first, we used a babybjorn. I really don't know much about slinging, what is so good about the connecta? I'm wondering if we need one this time round?
The best type of slings support babies from knee to knee which is the optimum position for them - the Bjorns and similar carriers put all the pressure on baby's crotch instead. Also the outward facing position which is popular doesn't hold baby's spine in a good shape and can be uncomfortable for the person carrying - you can't carry facing out in a Connecta or similar sling, it's either a front carry facing in or a back carry.
The Connecta is one of the cheapest of its type which is one reason why it is so popular but it's still more expensive than a baby Bjorn - worth every penny though in my opinion. It will definitely last a lot longer than a Bjorn, I was still using mine at the beginning of this year with my son who was 2.5yrs by then. The resale value is also excellent.
As Margot said re the knee to knee to support for baby. Also babybjorn dangle from the wearers neck - whereas you want the weight spreading out down your back / into pelvis. Espeically when baby gets bigger!
Manducas, Ergos, Mei teis etc provide the same knee to knee support but the Connecta comes in much cooler, more colourful designs
I found the Connecta to be a comfortable and eay to use sling. I also use a Mei Tai which is a tie up version of the Connecta. With this sorts of slings, they keep a baby's spine in its natural C shape, rather than the S shape that the carriers, like the Baby Bjorn, force the baby into. Slings are also better on baby's hips too - is site will give more info on the ins and outs www.babywearingadvice.co.uk/anatomy.htm
Margot I don't the connectas are more expensive than the baby bjorn are they?