How big is your baby?
I have several carriers of my own and a couple for sale in the for sale forum.
I would not get the Michael. I have it and it was a pain to make it structured enough so that it would not cave in on my little girl.
I never bought the Pamela bc it seemed to collapsible.
The Charlie seems like it is a nice bag.
The Nantucket London is VERY cute, but seems to show off more of the dog than I preferred.
I LOVE my Alex carrier though!!! I would highly recommend it.
You may want to check out the for sale forum, sometimes Kwigy Bo and other nice brands are listed there.
Good Luck!