I have an un-popular opinion, but we still use and love our Bjorn. Yes, our baby is a peanut (15%) so there is still time to grow to hate it as she gets older and heavier. We use multiple carriers daily, we do have the Ergo and it is super comfy, but I am so lame and it is difficult for me to buckle by myself. I am sure with practice it gets better and as I have admitted I am lame.
I am sure all of the issues everyone has with the Bjorn are valid, it just is not the case for us...yet.
If you do still want a Bjorn or any other carrier mentioned try a re-sale store. We have a Children's Orchard here and they have Bjorns for $35.00, I bought my Moby there for $20.00 brand new and my Hot Sling for $13.00.