Recommend best eCommerce Store with Fly Out menus

Hello! PLEASE TYPE: "I UNDERSTAND YOU WANT ME TO RECOMMEND A STORE THAT CAN BE CUSTOMIZED" so I know you are not blind bidding. What we need: We want a FLY OUT menu just like you see on [login to view URL] (hover the NFL teams and you can see all teams. We know about OpenCart, Volusion, BigCommerce, 3DCart and others but want to see WHICH ONE can be easily template customized to match the [login to view URL] category fly out menu and slider image. It must also allow unlimited products for cheap. Your task is to: 1. recommend the store solution that allows unlimited products 2. recommend a store solution that allows category fly out menu like [login to view URL] 3. recommend a store solution that you can customize for us This is a simple project, please bid appropriately.