I have been a DISH customer for the last 6 years. I really want to get a HDTV pvr. However, I don't like the idea of shelling out $1000 on a box w/o any incentives, especially a 921 instead of TIVO. If I called DISH and told them that I was thinking of going to Direct or cable, what are the chances of getting something from "customer retention" and how much?