Tinlee has some options including wireless control that may suit your situation:
http://www.tinlee.com/RF_Switches.php?active=6
To use the SiliconDust HDHR tuner, you need a PC (Windows, Mac or Linux) to interface between your network and the display. The PC needs to have enough video 'horsepower' to smoothly display 1080i content. Windows Media Center (Win-7 HomePro ships with it) works fairly well... so there should not be a need to spend more money on software. VLC is free and open-source, I use it rather than the proprietary MS WMC.
I'm saying that I'm a bit of a techno-nerd... and the HDHR is the solution that works for me. I can understand if it does not appeal to everyone.
The display can be a TV with HDMI, HD component video, etc., so long as the PC and TV have matching interfaces. A PC monitor is also a viable alternative.