Yeah, I agree. Many factors come into getting long bulb life. And I think everybody should get UPS battery backup, VERY IMPORTANT POINT , so lighting strike or power outage doesn't put lots of stress on bulb or pop the bulb. I guess I was thinking more of epson having really short bulb life of 700 hours a while back compared to 4,000 paper spec. I'm not saying the benq will have this problem at all, but , we will not know how long the bulb CAN last from user experience until owners report back that info. But if the PJ is giving the wrong hours , it could be hard to judge how many hours someone does have on it.