I have seen good reports for the Mei Tai, particularly for carrying toddlers. I used a Kari Me for my baby until 1 month ago (he is now 12 months old). This was great when he was smaller but the stretchy fabric has meant the sling gets lower as he gets bigger! Now I have a Mei Tai which he is enjoying but I am still mostly carrying him on the front with the straps crossed at the back.
How do you tie yours? Do you have any Mei Tai baby wearing tips?