Provided you are getting adequate signal strength, does the STB itself make a difference in picture quality? I'm talking strictly HD channels from satellite or even OTA. If signal strength is high(and I know their sensitivity can vary), will PQ be the same from box to box? Or is there a new killer STB that I should look into immediately? I don't care about the ability to zoom, stretch, or otherwise distort the picture(the hatred for black bars by people continues to amaze me). Thanks for any insight.