I love our ergo but didn't like it for my newbie with the insert at all. It was way to bulky. The beco has the internal harness for newborns and I used that for a SSC but I hate it now that she is 6 months! My favorite carrier is a ring sling by far until the babies really get big enough for SSC's.
Mommy to Fiona 12/09 and new baby Layla 3/12 a HBAC!