Summary: This projector worked good for about 6 months. I would say it was used about 2 hours per week...maybe. It was located in my company's secondary conference room, so I would think it wasn't used as much as our primary conference room. I plan to get another brand. I'm not going to bother with ACER, since reading some of the other reviews proved that was worthless. I will try ViewSonic next. We had a ViewSonic monitor that stayed on for 10 years straight (24/7).
Summary: Personal Experience Been using for about 3 years. Except for periodic seemingly unsystematic overheating that lead to automatic power-downs and the need to disconnect power cord to reboot the device, the projector was an ok piece of equipment. However, and it appears the problem is common and most likely the whole series is at least partially faulty, after 3 years the DLP chip (MDM) has failed and got covered with dead pixels.
Summary: We have been using this projector with relatively no issues for almost a year. This morning it started displaying a "FAN FAIL" error and will not work. We checked our warranty and have 15 days left on it thankfully but now we have to pay for shipping to send it back to Acer and wait who knows how long to wait for it's repair and return. A word of advice, purchase the warranty through Amazon if given that option. They're much quicker and easier to deal with than Acer.
Summary: Great unit and has been working in my classes for the last 3 years without a hitch. Great clarity and even projecting on an old projection screen with minimal luminous reflection it is bright and clear enough for the students to see from the back of the room.
Summary: UPDATE 1/13/2014 (gave it the fifth start because it's still kicking and hasn't degraded at all since I've had it) Still working, still on my original bulb, have used it as both a computer monitor and a TV (well, hooked to Xbox for hulu technically), all in all it's just performed well over the years -------------------------------------------------- Quick summery: I like it, glad I bought it The pros: both vga and composite inputs automatically senses and corrects...
Summary: Especially for the price point, this is an all-around great projector. My one problem with it is that it gets scary hot inside. Like, I could pick it up and use the air vent as a hairdryer. I'm still working on finding a way to keep it comfortably cool, but meanwhile the heat has never impeded it's performance.