Comment I choosed Russound (Score 1) 438
I choosed Russound since it does one thing and does it fairly well. The biggest limitation is probably that it is limited to 6 amplified zones; another one beeing that the unit comes up front with a 12 channel amplifier and a corresponding power consumption. The future solution I see in a industry standard real-time bus for all AV equipment; think about the technology to replace HDMI but able to distribute AV to a number of room at distances up to some 100 meters. Biggest technical hurdle would be synchronization. Conventional networking technologies from the PC Lan space (Ethernet, Bluetooth) is not up for the task since they rely on buffering and for this application syncronization is an absolute must.