Hey, Carl. I'm happy for ya - it's always exciting to get new gear!
Just to make sure that it's not semantics or my misunderstanding, I want to make a comment on your question about, "so i guess pass through is more important right?" HDMI pass through, as I've seen it, means that the receiver will pass the HDMI signal through (and can therefore be used as an HDMI switcher), but it does not process the audio. I would think with Blu-Ray and HD-DVD, you may very well want the ability for the receiver to process the HDMI audio.
I don't know much about Marantz, but both of those Yamaha's have had good things said about them. The 663 seems to fit your needs the best, although the extra coin for an HDMI switcher is a downer, IMO. Are you open to any other brands, or are those two your main preference?
Adam