this be a good projector in every way except for one minor annoyance - it keep search for signal by auto switching between various input when the source signal be interrupted for any reason . there be a set to lock source , but maybe I be not do something correctly because the setting do not work . there be a firmware upgrade available , have not try it out yet , maybe that will fix it . other than this very minor issue , very satisfied , be be bright enough to watch during the day . there be some common initial tweak like set the lamp to standard , and adjust contrast etc to get the ideal picture . I pair this with the 3dxl , and now use it to watch 3d and 2d . I get a separate sound bar , do not rely on the internal speaker . when watch a movie , the fan noise be not audible at all -lrb- I guess it depend on movie volume -rrb- , but it do give off heat . without a ceiling fan or air conditioning , the room feel warm . my screen be 100 inch , you can see one of my other review for the screen that I pick . for the price point , this be a great projector , I do not feel that I miss anything by not get the next higher Optoma model .