I use the netgear HDX101 adaptors, they were LISTED as HD adaptors about three years ago. I think in my tests, they do about 90mbs, which is enough for me to transport HD around the house and a LOT of data and video streaming. They can be found onine, but I buy them from ebay for about 25$ a piece. Key to using and expanind adaptor usage IMHO is STAYING with one brand and type. I know there are standards, but i find that enough staying within a same spec and switching brands causes slowdowns and security issues (these adaptors will allow a password for access to data)

That said, I have been using the technology for about seven years now without problems and great ease of transport