I am right on the edge of ordering an 899 unit but am a bit confused. On YouTube there is a video of a fellow opening his new Humminbird 899ci HD SI and it CAME with the XHS 9 HD transducer. It is my understanding from all the posts in this forum, that the XNT 9 transducer is the standard one shipped with this unit. Sooo, can I order the HD 'ducer to come with the 899 and not have to exchange the XNT?