I got a Panny PWD8 Standard Def. I checked out the PHD8 against the PWD8 with High-Def source into HDMI. The PWD8 scales it to fit, as does the PHD8 (only 1024x768). Up close you could see the difference, sit back 9 foot as is my lounge, and errr....couldn't hardly tell the difference. So HD source to me is more important than HD res at the moment and I won't pay over the odds for something I can hardly see from 9 foot. I'll stick to HD compatible for now, instead of HD ready, much cheaper.
If I went for an LCD, that would typically be used at a much closer range, especially for xbox and the like I would go HD res, but then I wanted a plasma for the contrast.