I was looking for a simple to use yet complex e-commerce extension and then i stumbled upon HikaShop. VM is good, but this one is better, simple to configure, simple to manage, and this comes from a user that has no programming skills whatsoever. the support is flawless, i had a few things i wanted changed/fixed and their answers came fast and accurate. on other support forums i often got the "it's not our fault, it's the core. bye" answer, but here they actually get the job done no questions asked.
It is simply a flawless extension with professional support.