There have been a few posts recently about a good handbad carrier so wanted to let you know about a new one that I just received today. It is by Lucy's Luxeries and is called the Charlie. I absolutely love it, along with that the owner, Jamie, was the most helpful person I have ever dealt with when it comes to ordering online. She responded immediately when I sent her an email, even though it was on Sunday and got my bag out the very next day. I highly recommend the bag and Jamie to anyone considering a new bag. No it isn't cheap, but then again not much is when it comes to my Zoe.
I do have the Kwigy Bo as well and I have liked it well for quick errands, but I do feel like it squishes my baby too much, even though she is only a little over 4#, the sides squish in and there is no bottom support. Don't get me wrong I still like that bag and will use it, but when I started thinking about flying in the KB I just didn't feel like there was enough air flow or stability with that bag. The Charlie takes care of that issue and is very well made!
Here is a link to her website -
http://www.lucyslux.com/