I just bought a 55 inch Visio. I like it, but be warned, it doesn’t look that good when driven from a composite or analog cable input. It looks great driven digitally from an HDTV cable or fios box, and the X-box looks incredible fed from the HDMI interface.
That is exactly been my experience with a 47 inch sharp. It look beautiful on HD but with lower quality input you can really see the flaws.