J.S.
K.,
I had a Jeep brand front carrier that I used for only 2 months; just became was to uncomfortable to wear. I bought a sling from Kangarookorner.com, and love it. My son is 8 months old and weights 23 lbs and this still works great. I paid $50 bucks for it but it was the best 50 bucks I have spent on an item like that. They are adjustable and come in some many different patterns and materials.
Good Luck and Congrats,
J.