I have be use a projector as my main big screen for about 10 year but when I move from a old house with high ceiling to a new place with a really low ceiling in the basement tv room , I have to find something else . I get this and a nearly flush ceiling mount and it do the trick . I can sit behind the projector rather than have it in the back of the room . I get about a 55 inch screen at only thee foot away . I use it for both cable tv and xbox kinect game . this be the lowest price short throw projector I have see that accept HDMI cable which be a plus . the only star off be for the volume control . it be not infinitely variable ; it just go up 1,2,3,4 etc. so it he difficult to adjust to the right level for some program . I will probably run it though a amp to fix this . oh yeah it have a `` high altitude mode '' I have never even hear of that before but since I live at 4,600 foot , I guess I 'll give it a try .