The shop is obviously faster than the old one and looks a whole lot better - much more professional. It does need a little more knowledge and experience of the way things work and more thought in configuration as there are many more settings than the old version that need attending to. Once I learned the right way to use overides, changing the layout and look of the pages was much easier than on the old version.
Now my sister's shop site needs updating. At the moment it uses another store extension, but it will change to Virtuemart 2.
All in all a great job - and a great price, too!