I'm wanting to buy a large screen TV probably 37inches or 42inches. There's so much technology with these tvs,that I somewhat lost as to what I really need. I was thinking of plasma or LCD, but with having only a regular antenna for hook up, sales people have been telling me that the picture I'll be getting won't be worth anything. One even said a rear projection would be better than LCD or Plasma. So what's the best advice for me?