Hi J.,
I have the Baby Bjorn and my little one LOVES it, so I think its a MUST, however, I do not know how it compares to other infant carriers. My little one is now 4 months and at the age where he does not like to be cradled, but carried upright, so I even use it when I am just walking around the house, the grocery store, etc. It allows me to be close to him and talk to him about what we are both seeing when he is forward-facing in it.
I think an infant carrier is a good buy, and I like the Baby Bjorn, but it is more pricey that other carriers and I do not know how it compares comfort wise.
Oh and when my little one was a newborn he actually used to fall asleep in it when he was facing me. It allowed us to snuggle and be close while I could still use my hands.
I should also add that my husband loves to wear the Bjorn and he not always 100% comfortable holding the little one the way he likes it.