Ecommece Platform - Zend Framework or CodeIgniter

I currently work for a large enterprise and we are using an eCommerce solution called Magento. I've also had the not so pleasing experience of reviewing other platforms and have come to the realization that all of the solutions suck. I'm interested in hiring someone to create an open source application that actually follows the MVC pattern. Release one needs to have the following: 1. A shopping cart with many features. 2. A CMS 3. Built with the MVC structure. I'd prefer to use CodeIgniter or Zend Framework. 4. A few more features...read on.