Well, I put my newborn DD in the moby wrap carrier (similar to HAB) for the first time today. She had been wanting to nurse non-stop, or to suck on her fingers, which was frustrating for her, because those fingers wouldn't behave! So I tucked her in the moby, and she was INSTANTLY asleep! I couldn't believe it! I feel like I'm writing a cheesy commercial, but truly, she was instantly content, and has been since then. I think she thinks she is back inside me, where all is dark and cozy. And my back feels great - it is actually giving me back support, and I was getting sore from carrying her and leaning over a little to nurse, etc.
I think I would have paid twice as much for it and still been happy.