I have been looking for a shop-like Wordpress plug-in to start a new project on Internet. I have tested a lot but just this one fits our necessities. Is quite powerful, well programmed, many options, secure. You can define almost every aspect of a shop with the advantage it is very configurable and easily customizable.
On the other hand, the support is outstanding. The author is always willing to help you out with any problem or bug you can find and solve it in a blink of an eye.
Every single plug-in, programs and other pieces of software are not bug-free. This is not an exception but the most important thing is that it is in constant development and improvement.