I have both and still using both I would say konny is good especially when baby is before 6 month old. After will be tula for long carrying as my baby is heavy. Konny for 1 to 2 hour still OK. Convenient wise konny! And konny has this magical thing that let baby sleep easily. Normally what I did is if I didnt bring stroller out I'll use tula. If I have stroller ill bring konny.
Ginger