The Best e-Commerce plugin for WordPress? Well, I have tried numerous Online store plugins, and it really depends on your needs and liking, but over all WP e-Commerce from GetShopped.org is a good choice, It is not as nice looking as Woo Commerce, and the features vary, but still it has good functionality, and less minor issues. However, if product variations are a concern, WooCommerce may offer more solutions.
I have experienced only minor issues when relocating a website, which is still better than Woo Commerce's incompatibly with most themes. So unless you wish to purchase a WooTheme, I'd have to say WP- e-Commerce suffices just fine. Plus its appearance recently improved a lot!