I Need Help Selecting a Shopping Cart

[heater]

I have agreed to partner up with a friend in his business and the first thing I want to do is rebuild the website from scratch. The problem is I have never built a site with a shopping cart before. There are a ton of available options and I don't have any idea which one is best.

We're only selling one product. We will be selling accessories in the future, but I can't imagine us ever having more than nine or ten different items available on the site.

I just looked over ZenCart and Roman Cart and realized that I could spend days looking at all of the different shopping carts available and still not make the right choice. Should we just go with something simple and use the PayPal Certified Integration or???