Jumpseller is not the overall winner in this category but it does outshines the rest in one area: multi-language features. It supports over 30 languages by default and it also has the option of using a language-specific admin area, which is something most builders lack.
Localization is at the heart of Jumpseller, and they integrate lots of local shipping carriers and payment methods.
You can also customize the checkoutflow, another area that is usually restricted by other vendors. There are no transaction fees and pricing starts at $19 / month. SSL and a free domain are also included in all plans.
On the other hand, it lacks some more advanced ecommerce features like recurring products and gift cards. Also, there are just a couple dozen themes available which is very poor compared to the hunderds offered by Shopify and the likes.