The easy access for our customers with one login option which makes us look like an IT service provider as opposed from being just another merchant solution out there! Very simple interface; nothing really stands above other solutions but some additional tools would be great (such e-mail marketing integration). I also haven't seen any major issues so far - everything was working well during my first days using this product at work place where we are managing about 70+ different merchants' web stores including eBay Business Portal / Seller Centre etc.;.