I have recently bought a Sanyo Z4, my first projector, from Discount Electrical. I can vouch for the same excellent service as experienced by others on this forum. The picture quality is great, and it impresses all who see it. I have however been somewhat disappointed by the level of fan noise from the machine. Posts on this forum and others have suggested that some people are unable to hear their machines at all. For me the noise is quite noticeable during quiet scenes in movies. I generally use the Creative Cinema setting with the lamp in the lowest (eco) mode projecting onto my portable screen, with the projector placed on a coffee table. The noise is a combined wooshing and whirring type of fan noise and is not due to any resonance effects. I dont have any means of measuring the sound level so cannot compare with specs. I find the noise level comparable to a PC, in fact I would say that my Dell Dimension 5000 is somewhat quieter than the Z4. I would add that the sound level does change, and it seems louder at certain times than others, albeit with the same settings. Is my experience typical of Z4s or do I have an unusually noisy machine?