I am new to this so please be kind..I just purchased a Sony 52" XBR4 and had DirecTv hook up their new HD DVR and the new dish..My HD channels are great, my SD channels are terrible...I have had 2 DirecTv techs out and they both basically say that's the way it is, one actually said DirecTv made the new boxes do this so you can see how much better the HD picture is..I just fail to believe this is true...Can anyone give me some input on this? Thanks