I have an '04 Vantare with an '03 TracVision in motion Sat and it sits right on the top of the front of the coach. Since I want to move the dome toward the rear of the coach since the place I spend most of the time has palm trees in the way, I wondered if I would benefit from upgrading my older unit or is it still ok? Any advice will be greatly appreciated.....Also if I upgrade, would in motion HD be economically feasible....Thanks, Mike Shaw