We have purchased and giving nearly all carts/stores of this class a good test before landing on this one. This combines Joomla with OpenCart, a perfect match! There are many great developers for both! You can also easily find custom coders for both. Anyway, we were going for aesthetics, feature set, stability, and customizability. All are found in MijoShop and not so much in any other.
Their support is above average. You just have to get used to the time zone difference. In the US, you have to communicate as early in the morning as possible. I recommend numbering all of your actual questions as well.
Thank you MijoSoft!