Ecommerce

Hiya,

What is the best ecommerce solution for wordpress 2.7?

I have had a look at a bunch of stuff and wondered if anyone had a favourite option? Ideally I would like to be able to add the ecommerce code to existing posts, so we can maintain the feel of a product catalogue. But if there is a better option then I’d love to hear peoples opinions. I’ve read the reviews but you feedback would be really useful.