Forget the baby bjorn.... walk away, walk well well away! they are awful IMO. Put it this way - there is a reason why ebay is flooded with them!!!

For some readily available slings look at the Close Carrier (for the first 4-6 months), CatbirdBaby, Ellaroo, Baby Hawk (from Mel Bel's store), Didymos woven wraps, bamberoo ........

say hello at baby carriers down under - the guys there will help you with a good sling suggestion (or 10)