Everyone has been told that HDMI is great because it provides digital video and sound all in one convenient cable, but did you know that just because a receiving has an HDMI input doesn't mean that you'll get both digital video and audio?! I bet you didn't!
Be careful. The receivers do not indicate whether they are capable of carrying sound through the HDMI input. You'll have to research or trust your audio/video sales man.
Rule of thumb, if it's under $400 it probably won't do what you want it to do.