Thanks for all of good information presented in this forum. I have had good results with DVE. Lets be clear when talking about calibration. This disk is only usefull calibrating the device and source input it is connected to. Simply stated a calibrated input for a HD DVD and another source DVD had two very different configurations. Alternatively it is impossible to calibrate the HDMI cable box, or standard HD clear qam signals. So a properly calibrated DVD source shouldn't suggust anything else. Makes the disk sort of a waste of money. Without expensive tools and expertise there is clearly no way to calibrate any other source epecpt by eye and personal preference.