: Onkyo's wireless headphones MHP-AV1

Onkyo shows off its MHP-AV1, a wireless headphones set designed for A/V. You can tear those ear drums anywhere you want with music that sounds excellent (in the beginning at least). It uses the 2.4Ghz radio frequency and has a range of 10m. It has all the digital gizmos like Dolby, DTS, ... and this should really be the thing to have for people that want to enjoy their tunes without disturbing anyone alse.
Personally I have never tried one of these wireless headsets (10m range is not sufficient in my mansion)... so are they really good?