Of course as soon as you get your HD81, you'll be trading in all those acceptable, but low resolution DVD's for shiney new Hi-Def ones on HD-DVD or Blu-ray. You will find the difference between the older format, and the newer ones to be simply breathtaking on the HD81 - which is exactly how your movies should be!
Congratulations to Optoma - Despite limitations normally associated with DLP projectors in terms of ergonomics, they have created a superb platform for watching great content. We are pleased to grant the HD81 our Hot Product Award, for providing a projector with great image quality, and massive input flexibility, that will appeal to a significant number of home theater projector buyers, seeking a great image, maximum control of the image, and who can work around the Optoma's placement issues, and iffy fan noise level in high power mode. (Note that the Optoma is still brighter in low power than most of the competition in full power).