I am thinking about buying a rear projection TV. I have a Sony 28" widescreen TV 100 HZ. I am thinkoing about the new Toshiba 42" or possibly 50" or maybe the SonyKP44". I have also seen some 40" Toshiba's 100Hz at under £1000. What would you recommend? Where is the best place to buy? Will the picture be better than my Sony w/s TV now?