Summary: My company has used 10 these projectors for 8+ years and they work great at their native resolution of 1024x768. These units work good at higher resolutions up to 1600 x 1200 as long as you maintain the frequency at 60hz. In the 8+ years of use we have had only 2 units go bad (usually the motherboard).
Summary: Personal Experience I have had this thing for 6 years. First bulb has 800+ hours on it so it's getting some purple spots in the image, but the projector runs great. Kinda sucks to not have HDMI port, but no real complaints other than that. Problems No HDMI. Wouldn't mind some hardware buttons for ceiling and rear switches. Kinda hard to navigate the menu upside down and backward.
Summary: Personal Experience It has its days there is some times it doesn't work right or not at all. This is a great projector and has a good remote. Brightness is not so good at only 2200 lumens. Is very hard to get the picture just right. I love the freeze function. It has multiple connections excluding USB.
Summary: The Proxima C180 (AKA Infocus LP640) is a great general purpose projector. I am using one for high definition television watching on a 100 inch screen and it does a great job! All my friends are impressed when they come over and see how clear and bright the picture is. For under $400 used on eBay, this projector is an amazing deal. Don’t spend hundreds or thousands more on any other projector.
Summary: This line of projectors work well with both computer and video projection. They are bright (2200) Lumens but what is really nice is that they reproduce colors well and they are amoung the better projectors in their class when it comes to video and photo projecton. Another nice feature is that when they are ceilig mounted, they self configure. No need to go thuough the menu to invert the image, it's automatic! Great all-around projector!