I wanted to see what the cost change might be (before I call Dish) if I replace my 722 with 2 612s. My bill currently shows a $6 DVR Service charge per month. The reason I'm looking at doing this is to drive both TV's at HD, plus get the extra tuners to record shows. One other thought, will my external HD and the shows on it, be able to work with one of the 612s? Thanks everyone!