Another happy Z5500 user here. I bought it slightly used from TPC almost 2 years ago. I use it exclusively for movies, with a projector, in a room that's about 4 x 6 meters big. (Maybe too big for the Z5500?) Mostly it's just at half volume with DTS sound, and it already rocks the room. Lahat pa naman ng naka pag movies sa home theater ko ay very impressed with the sound. But replacing my old business infocus projector in a few weeks, with the Acer H5360.