This Optoma EH416 project has been a big joy to own and use for training. This projector is bright with a great lens range while the fan sounds are barely noticeable by myself or the participants. I have personally used dozens of projectors over my career, many of them had short lives with some drawbacks. The Optoma EH416 has been a reliable platform and I have logged over 60+ hours of lamp use within a months time using this item. Pros: Bright clear image with the image shown on a plain white wall with the ballroom fully lite. Cons: Audio sound level transmitted via a HDMI connection does not take advantage of the full sound levels capable of the 10 watts built-in sound system - I wish the sound level was much louder. Also, everyone who has seen this unit in action has asked me if they can borrow the projector. :-) Bottom line this unit is a great performer for training in a bright environment and it does well with watching HD movies as well in business spaces.