I'm thinking of getting some sort of nice digital projector for my new Home theater. It would strictly be used for movies. I don't know a whole lot about these projectors as I've just started to look at them. I've heard I want something with a relatively low Lum. level, since the room will be dark when watching movies. But the Bulb(s) is what concerns me. I was speaking to a friend and he has a friend that owns a pretty expensive unit $12k or higher and he says it costs him $500 to replace the light bulb. The light bulb says it lasts 400 hours which I would figure if your watching regular TV and movies that you would probably need a new lightbulb evey 3 months. Or in my case about every 8 months or so. Is this true. Do the light bulb(s) in the projector burn out that fast and do they cost that amount of money? Is it typical for all Digital Projectors or just some?