Beco Beco Butterfly 2
I bought a Beco Butterfly II when i was pregnant with DS2. I was on the look out for a buckle carrier, but i wanted it to bepretty too.
After much deliberation i chose the Butterfly. When i received it i was very happy. It was pretty,but really really easy to put on. It came with a DVD with instructions.
I use it whenever i go shopping, i even used it when travelling on the plane recently, i was on 7 planes all up and it came in handy. I would just strap DS2 to me (not during the flight) and it left my hands free for all the inevitable bags.
I would highly recommend the Beco Butterfly II. I have a "river" design. I get comments whereever i go :)