I've had multiple new issues with Dish, which I won't bore you with...
but you may want to trade your 722 out for 612 as well, if you won't be running 2 tv's on the 722. apparently they charge you more for the duo model DVR because of the "potential" that you will be using it on another TV. just something to think about. I think it's 7 bucks a month cheaper for a non-duo DVR.
there is no comparison between the SD and HD channels though- HD all the way!