I'm very impressed with the site and reviews and have been reading through the site for quite some time. As I've decided to go with a Sony IPS TV and am I looking for 65" at around $1200.00 it appears that two sets are the X750D, or last years X900C. TV is going to primarily be used with a 4k capable HTPC and viewing is in a bright room with windows, most viewing will be from 10-12 feet away. I'm torn between these two models as there seem to be some trade offs like WCG on the X900C or the X750D being marginally brighter. What are the other differences I should consider? The TV will be used for PC based television (Windows Media Center), PC based gaming @ 1080P/4K, or Amazon Fire TV for 4k content though I am hoping that the Sony Android TV features might be allow me to remove it. Night time viewing happens and to improve presentation a bias lighting system will be installed on the rear of the TV which will be 8 inches from the wall.