I was two digits on my phone pad away from upgrading to HD with DirecTv today but something I read concerned me. Maybe someone who has it can help me out with a few questions before I make the jump. The first question is the one that is bugging me the most! #1 DirecTv offer local channels in my area but they are not avaliable in HD yet. Will I still have to buy the darn antenna just to view my locals? #2 Is it reall worth it. Is the picture quality that much better? I have a 61" HD Zenith with DLP technology.