Hey guys. Presently I have a Black Diamond 113" screen in my home theater. I have been somewhat happy with this screen but my room is light controlled and except for lighter carpeting it is pretty much a cave. I have black front wall and ceiling and dark burgundy side walls with black curtains.I have been told that the Stewart Studiotek 130G3 would better serve my purposes. I notice that the Black Diamond has a noticeable hot spot and a "speckly" appearance I don't like. Is the Stewart Studiotek 130G3 4K ready? Where can I get this at a good price? Thanks for the help.