Hi I have been looking into getting a projector for watching films for weeks now and I think from what I've read and the amount I can spend then I should get a Screenplay 4805. I had a demo of one at the weekend and was very impressed but for all I know I may also have found an Epson TW10 good enough also but I haven't seen one in action. Incidentally, what's the difference between a TW10 and TW10H? (if any) Anyway my main questions are: What sort of bulb life are people typically experiencing with the 4805? How much would a replacement bulb cost? And is there a danger that bulbs would become unavailable as the model gets older/discontinued? The price I have found it for locally is £799 which seems to be the same as most other places. Any help much appreciated, Thanks, Jason.