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20,000 hours is a lot for home theater use. It's 2 years of solid running if you never turn it off. Never turning it off is unlikely in the home but that is not what it's for apparently. As the general view so far has been that there is no lamp replacement (I know lamp isn't the right word), then you assume that the projector gets replaced after that. For 24/7 digital signage, that kinda eats into the benefit if you have to buy a new $3000 every 2 years.

Pro installation projectors designed for 24/7 operation are normally expected to last a lot longer than 2 years with proper maintenance and bulb changes. Plus, 20,000 hours is meant to be when it reaches 50% of the brightness level on the day you bought it. It already isn't very bright for signage and with continuous operation, I would bet that it becomes unusable for anything other than nighttime use after less than 1 year.

Led/laser light sources make a lot of sense for home use or for rear projection display cubes. For commercial use, I can't help thinking we're not there yet. Real installation projectors are 7000 - 40,000 lumens because they have to battle bright light. 3500 lumens is in no mans land with a non-portable projector. If it was portable, it would be good for business presentations but those projectors get used for 2 hour a week so no need for led. Same is true for board room installation projectors.

Distinguishing between color and black and white is pointless. I don't watch much black and white tv and nobody else does either. May as well call it what it is - a 2000 lumen projector. I would be interested to know how it looks with one of the black screens in ambient light to see how it does as a home theater projector. I would buy one and throw my tv away with no bulb changes to worry about. Those 3000 hour bulbs last less than half of that when set up for bright conditions. As we are about to get hit with the new wave of oled tv's, now would be a good time to reintroduce the new generation of projectors and screens which challenge some of the traditional reasons not to get one instead of a tv. Plus, they don't dominate the room when you're not watching - it just disappears into the ceiling.