After looking around for a shopping cart that would suite my needs for a "starter" shopping cart. This one is most defiantly the best one around. It's easy to install and use. Once you play around with it and read over the documentation ( most important ) the overall system has a lot of potential. If there is something that you can't find in the documentation. Simply sign up to their forum and one of their moderators will gladly assist you. They've been really helpful for all the questions I've asked. Also friendly too! Take the time to try this extension! You will love it!
Only con I can think of is that it would be nice to see some video tutorials. Basic functions of getting a shop setup. For those who are more visual learners.