We have used SiteBuilder for the last 12 months and are very disappointed with it (performance, ability to customize, frequent problems, and lack of mobile support) and are looking to make a change. We want to do a full web site redesign with the primary objective of having great performance, ability to support mobile, plus most of the modern features that are found in most platforms.

Right now the options that we plan to explore include "Rewrite using Site Builder", "SuiteCommerce Advanced", "Magento", and "Amazon Web Store". We are a retailer with about 10,000 SKUs doing 60k to 70k orders per year. SEO is critical to us. We need the ability to automate as much of the site manaitence functions as possible. (e.g. we want to have on sale items automatically added to the On Sale web page on the on sale start date and removed on the on sale end date or when no longer in stock)