My understanding of the current situation is that good projector bulbs are fragile, only last about 1000 hours, and can cost as much as half the projector's price. After a few bulb replacements, the cost of a projector can be the same as or more than a large HDTV, so other factors come into play: you get a bigger-but-dimmer picture with projectors, some of the cheaper DLP projectors are bright but flicker horribly, etc.