I've been using the k'tan for hanging around the house and quick trips to the store. For longer walks, I much prefer my Ergo. My back gets tired and sore if I use the ktan for long periods and it doesn't provide much head support, so I am always holding the baby's head when I lean or bend over.
My issue now is that I think he is too big for the infant insert with the ergo. It says to use it til 12 lbs and my 9 week old is over 14 lbs and very long. I think he still needs some head/neck support even though he is so big. Also, without the insert I feel like his legs are spread way too far apart and he seems very uncomfortable. Anyone else run into this issue? Any suggestions or solutions that you have found worked well?