Summary: Personal Experience We have 214 of these units in our college, out of 340 rooms. They are excellent projectors, for the price point. Run quiet and consistent. One thing we did find out early on, is to make sure and clean the filters regularly. If the filter gets just a bit dirty, the projector will go into a standby mode, to protect itself from over heating. We have them on a twice a year schedule. Cleaning the filter is a breeze though. The side mount holder is awesome.