I am a fan of wireless HDMI solutions. Prior to moving to our current house, in our family's last home, which we bought over a decade ago, I had wired up my room with component video cabling. HDMI was at best, very new, and very, very, limited in range, so it wasn't practical to run HDMI cables though the wall, but I did also run a pair of CAT5 cables as well.
Then of course HDMI became the defacto standard. I tried using some of the early HDMI to CAT5 and back adaptors with limited result. Ultimately, I did start using a Gefen Wireless HDMI solution back then, and it just barely had enough range to get the job done, but work, and work well it did. My only real complaint at the time, is that when 3D rolled out, the Gefen only supported older HDMI, without 3D.
Today most wireless HDMI such as the solution BenQ provides, are HDMI 1.4a compatible, and that should mean no issue with wirelessly transmitting 3D content as well as 2D.
So, with that lead in, the question is why do you, or should you, care about Wireless HDMI?
Before I answer, one additional thought. Most Wireless HDMI solutions are referred to as lossless. That is, they will not, in the course of transmitting that HDMI signal, lose any part of it. The finished signal should be identical to one transmitted over a good HDMI cable.
I can think of three reasons to care about/want, a wireless HDMI solution like the BenQ W1500's:
In no particular order:
In a permanent setup (typically with a ceiling mounted projector), if you were, like I was in my last house, not wired for HDMI, but previously wired up, and you aren't into wires running along the floor, etc., then wireless may save you hundreds and hundreds of dollars to open walls, and run relatively expensive HDMI cabling, then sealing the walls, patching, and repainting. With a wireless solution, all you need to do is get power to the projector, and bring in the rest of your signals by wireless. Savings can be huge.
Portability favors the wirelessly hdmi enabled. Let's say it's a nice summer night, perfect for that backyard family movie night! Get a (waterproof) extension power cord, a table, and something to use as a projector screen, and you are in business. Plug the wireless HDMI dongle into the back of your source, such as the blu-ray player in your family room, and let it get the signal to your projector, instead of having to drag the blu-ray player and cables outside. That surely will simplify things! Or perhaps having wireless hdmi will make life easier if you take the projector on your vacation? (It does come with a soft, padded carry case, after all.
Don't forget, the W1500 projector is very capable, and can double as a business projector, so when on the road, that wireless hdmi means you aren't carrying a heavy HDMI cable.
When push comes to shove, though, the questions about Wireless HDMI are really threefold: