Both the receiver and transmitter are pretty much aesthetically identical, made from fairly attractive glossy black plastic. A folding segment at the rear houses three antennae (for MiMo WiFi). There are holes in the rear to accommodate screw heads should you wish to wall-mount either of the two base stations, but I'm not particularly convinced you’d want to - they're not exactly works of art.
The front end of the top surface is home to three status LEDs. From left to right these indicate whether the device has power, a video connection and a wireless connection to the other. As these can't be turned off, they could be annoying in a darkened room while you're trying to watch Blade Runner, or possibly just Gossip Girl - we're not judging.
A possible problem is the lack of any IR pass-through which means that although the transmitter and receiver can be placed in separate rooms, there's no way to control your Blu-ray or HD DVD player. A PS3 or Xbox 360 would have no such issues, of course, as both of those have wireless remotes. In a projector set-up the wireless connection would really excel. Placed on a ceiling the receiver becomes much less intrusive and being able to place your source devices anywhere in your living room, without having to worry about laying cables, should prove a boon.
The single-port-only restriction is a little annoying, but nothing a cheap HDMI switcher can't solve. A three-port version is mooted for release in the middle of next year, if you really can't be without more than one HDMI input on the transmitter itself. However, I can't help but think that anyone who can afford a £400 wireless HDMI kit probably has an AV receiver in their setup, which will consolidate all those HDMI devices into a single video output anyway.
Asus reckons that the BR-HD3 provides lag-free wireless transmission of video and, to the best of my ability to discern it, this does appear to be true. In an attempt to test this claim, I passed the HDMI signal through an Onkyo HDX-22HD to extract the audio, before then plugging the output of that system into the BR-HD3 transmitter. I'm not the kind of viewer to tolerate out-of-sync audio so I was most pleased to see (or should that be hear?) a complete lack of issues with this setup. I was also pleased to see that there was no discernible loss of image quality using the wireless connection.
While we'd have preferred the BR-HD3 Wireless HDMI Kit to offer support for 1080p video, there are plenty of situations where the 1080i/720p limit won't be an issue. As such, the biggest issue is the price; at £400 this kit is simply far too expensive to recommend to all but the richest of fat cats.