Summary: My experiences are only on two SP-4805(replaced with a refurbished one when the lamp went out, it was a cheaper solution, plus having a backup unit is a plus). Maybe running on low power helped the life some but i know for sure never turning the thing off is what kept them going over the estimated...
Pros: I'm with the last 5star reviewer, I've had five lamps over the past 4yrs and three have lasted over the 3000 hours by a few hundred and one hit 4100 hours. *see other thoughts for the fifth (learnerd my lesson on extending the life of the lamp at least for the SP-4805).
Cons: Price... I bought a, whole, refurbished SP-4805 with a new lamp, extended 2yr warranty, and 2day shipping from InFocus for $30 ($284.32) cheaper than just replacing the first lamp back in 2007. Sounds like a shotgun when they pop.
Summary: I didn't even buy the projector with this lamp in it new. I got it referbished but it has still worked great for me.
Pros: I am surprised at some of the reviews of this lamp. I have had it for a few years now and have had no problems with it. It has about 600 hours on it and it is still going strong. Maybe my trick is that I keep the projector on low power most of the time. It has less fan noise and the picture is st...
Summary: You can always trust new-egg. Don't purchase from unknown and unrated websites unless you want to get ripped off. Buy a different projector unless you like to keep buying lamps.
Pros: When it works, it provides a good picture (Infocus 4805 projector)
Cons: The catch is, it rarely works. I have averaged 150-250 hours on each of FOUR lamps before they have burned out. I run it in a cool room (65 degrees), suspended from the ceiling, no vent blockage, and only gets 4-7 hours of usage a week. Have not had one last longer than a year. Beware of any "unk...
Summary: The idea that you can expect 3000 hours from this lamp is nuts. I have gone through two in IDEAL CONDITIONS and neither has lasted 300 hours. Currently shopping for a lamp with a warranty longer than 3 months or 500 hours. Major rip-off.
Pros: Considering price and reliability - NONE
Cons: Have found that avg. lamp life is under 300 hours, not 3000. Runs hot, will not last, expensive.