Hi. Please can you help? I'm looking for a recommendation for a suitable video projector for up to 50 people in a conference room. Budget circa 500. The room will have lights on, needs remote control, needs to be fitted to ceiling, and needs to be portable. Ideally looking for something with a 1 year warranty on the bulb, and over 2000 lumens. It's use will be for a combination of Prezi presentations, keynote presentations and youtube/ video clips. Don't know which projector brands are reliable? Anyone use anything that has really worked well for them. If so, I would really value your advice? Thank you.