I'm using Hika products since long time now. They are efficient, stable, well developed in a intelligent way. You can customize according to your needs.
In the e-commerce world you must consider lot of variables, from tax, laws for every country and many other parameters that make many e-commerce software unusable if you do not knows laws and don't want to spend time to hack them for your needs loosing the ability of upgrades, in many cases, or going into future problems.
That's not the case of hika products. Fantastic customization according to your needs, always supported by the Hika Team.
I think that the support is one of the most important parameter to rate an extension. Because every software have bugs, features that should be added, solutions that every one needs. If you do not have such support, maybe the software cannot express completly it's potentials.
Some days ago a user contacted me over the hikashop forum asking me an opinion according to hikamarket and hikashop. I've told him that at the moment I think that hikashop and hikamarket (even if is the first release...) can be considered the only e-commerce solutions that "really" works for Joomla!
If I have build an e-commerce site for my customers I cannot use most of the software you can see around, 'cause I cannot trust about them. I need a stable solution while often there is no support or long wait from the community for an answer (while the customer needs answers soon...); tragic way to customize to be sure respect laws.
Hikamarket is the first efficient solution for a marketplace. I've seen it born and I can say that Hika Team (Jerome expecially) have done a great job listening to suggestions and features trying to develope as best as possible, in the less time a solution that I can use for a production site.
So, thanks Hika Team for developing such great products!