The hardware is identical. The EU means it is for the European market, whereas X is generic global. There may be slight differences in the firmware, but not sure if it will affect how it is used or what services can use it. Often, the only real difference may be which remote it comes with, and that may only be which services have hard keys on the remote. In the US, the "W" version (Walmart) would have a Vudu key since Walmart used to own them.