I have tested Hikashop against Virtuemart 1 & 2, Redshop, JoomShopping and Tienda. All of them are great on their own way but compared to Hikashop they all fail on certain items.
Overall tasks: 5/5
User friendliness: 5/5
Some times it takes a while to get an answer(between 2 to 8 hours) because they reproduce and solve the problem on their end and when it is solved they give you the solution.
Hikashop Team: Keep Up The Great Work!!!