I've been using this 720p projector for the last 1 year. So far, I'm happy with it's performance and its really value for money. I've done basic calibration using DVE disc. Mainly using it for watching HD movies with my home theatre setup. My source is the TVIX HD multimedia player connected via HDMI through the Yamaha AV amp RXV2600. Occasionally, I hook up the PS3 for games and the HD animation is impressive. For those thinking of upgrading from SD to an HD (720p) projector, this is really a bargain for the performance that you get. docmcool