Guitarman, how the image quality of HD71 compare to HD73? I have a HD73 and I wan't to buy the HD71 so badly because of low light output from HD73. I litterly have to close my door, window, and turn off all light just to watch a vagely image from HD73. At night is when I can see the true pontentail of the HD73, but during the day, it straingling my eye. I don't know if the HD71 2400 lum would be sufficient enought for day time gameing and video with out trapping myself in darkness? Please let me know. Thank! I had a HD70 to, and the different between HD70 upgrade to HD73 is amost like just receive new eye glass. More detail start to review itself to me and all I have to do is just look and start noticing it.