Does anyone have any experience with Directv's HD programming? I used to subscribe to Directv, but gave it up in part to the terrible quality of their signal....there was so much compression in most of the channels it was unwatchable. I am intrigued by the fact that they are adding new satellites that will allow them to offer 70+ HD channels. However, several months ago there was a column in Sound & Vision where the author made a similar claim....that they were compressing their HD channels to fit them in their bandwidth. Has anyone noticed if this is the case? Thanks