Shopping Cart recommendations please !

Hello everyone,

I would like to deploy a WordPress Website with a shopping cart.

Very quickly, here’s a description of the products I want to sell :

Printed stuff, like business cards, flyers etc.
I would like the users to be able to input custom info when they order (so I would like to be able to specify custom fields to be displayed and if possible, specify which one are optional, etc… and the fields different from a product to another)

So a visitor chooses a product he likes, inputs the info in the custom fields, and chooses if they want delivery or not, then it’s added to the shopping cart, and may proceed to checkout.

Ideally, I’d like to integrate it with PayPal, as I already have a business account set up.

So bottom line : is there a good plug-in that would allow me to do that, simply?

Thanks !!

[No bumping. If it’s that urgent, consider hiring someone.]