I bought this because of the reviews. I set it up and it is definitely a nice bright picture. Everything was great until I realized that the picture that shows the mounting options - it is literal. The bottom of your screen is exactly horizontal with the top of the table that you set your projector on. The manual states very clearly:
Do not operate the projector in any orientation other that table top or ceiling mount. The projector should be horizontal and not tilted either forwards/backwards or left/right. Any other orientation will invalidate the warranty and may shorten the lifetime of the projector lamp or the projector itself. For none standard installation advise please contact Optoma.
For us, to get to 120", the project must be 13' from the screen, which is fine except that there is a couch in front. We can not ceiling mount and so this means that NO ONE can sit on the couch in front of the projector. I am used to projectors throwing center so you can raise the projector to any arbitrary height. Not this one. The only other option is for us to put the project in front of the couch, which means a much smaller projection.
This is a serious design flaw in my opinion. I have tempted to send it back.