I'm using my ergo now that ds is bigger (10.5 lbs) and it's getting warmer here. I like the stretchy wraps for tiny babes, but they just aren't supportive enough when the get heavier, imo. Plus, I'm just so much faster at throwing on the ergo. I put him in it without the insert, and let on leg hang out and the other froggied up. He loves it in there.
I have a pouch, but I hardly use it, I like ring slings better so I need to get a new one, since I wore my old one right out.
One trick jolesh, is to make sure baby is well fed and happy when trying out different carriers or I find nothing works. It is a lot of trial and error...