For view presentation , 3D is best. But where as in online shopping functionality implementation, I dont know how 3D will support, there is no such action script functions available.
But Flash has good design environment and also good in action script. We can implement any web functionality using Flash. So MX Flash is best in giving view presentation for an online shopping site. You can use animation & web technics. It was developed only for rich web site development. So better to go with FLASH.
thanks
