HDMI receivers
I read about a few issues using the HDMI switching feature on the new receivers. It seams that some of the cable boxes need a firmware update to solve the problem. Other users with HDMI from TV to cable box have reported that they need to switch the TV off of HDMI before turning it off or it will crash the cable box.
HDMI is an evolving standard. You might consider saving money and buying a Yamaha RX-V2500 or Denon 3805, especially if you currently have a single HDMI source. You can get an external HDMI switch box down the road if you need it.
Concerning the mandated switch to HDTV, congress can change the date any time they want. Also, 3 years is a long time in the electronics industry, so if the upconversion to 720P and 1080i feature on the new Yamaha helps you enjoy your HDTV for the next 3 years then it might be worth considering.