I've got one site that has taken off pretty well (last month over 100 sales). It's built on Wordpress and the shopping cart I am currently using is a Plugin called Shopp. It works fairly well, but is not nearly as stable as CRE loaded (for those of you who have used it with Niche Blueprint). As I expand my store, I want to make sure I get a really good cart solution.
I'm asking for suggestions for:
1. Really high quality carts that I can use within Wordpress
2. Any other high quality cart that could be installed in a folder of my domain xxx.com/shop for example.
Any suggestions are greatly appreciated.