Running this on the recently updated WP versions 3.5.1.
I'm hard to impress, but Ready eCommerce wins the day. As I am running the free version for testing purposes, these folks are working at no-charge. I like their effort to ensure customer satisfaction. Alex has done a great job.
Now. On to the Ready eCommerce solution. This plugin is power-packed out of the box. We could handle our needs without any upgrades or addons, but when developers make good on a product promise, we must all support their efforts.
I give Ready eCommerce an A-plus for proformance, ease of use, adaptability and customer service.