Well I can think of some reasons to upgrade to the 1000.4 sat dish
1. One dish install verses two today, with the 61.5 sat dish.
2. IF you don't want crappy dropouts on your video/ audio with the 129 on a dish 1000.2 sat dish.
3. Being all mpeg 4 will take less space on your internal hard drive giving you much more recording space than regular mpeg 2 will .
4. The picture quality should be much better vs mpeg 2 ,if hd mpeg 2 to hd mpeg 4 is any indication.
5. I want the latest dish and will pay to get it.