I want something big, at least 40", but no bigger than 55". I definitely want widescreen (do they even make 4:3 ratio big screens anymore?), and I want HDTV. I see these HDTV-Ready TVs or HDTV-Monitors, and from my understanding, you just need to get a tuner from the cable company, is that right? If so, how much do these tuners cost? It seems to be the cheaper way to go is to get a TV that's HDTV-Ready, then get the box from the cable company. Am I right, or is there something I'm missing?