Adcom is soild stuff and shows you have good taste in audio gear eff.
bitserv's point is exactly the same as mine. In terms of trying to maximize audio quality, it pays to invest a disproportionate amount into speakers (and sub if you're not buying full-range speakers). not only are speakers fairly future-proof (except, perhaps, for # of speakers as that just seems to keep increasing), by moving up to medium-level gear (in the $200-500 per speaker range) you get huge increases in audio quality over the cheap stuff.
However, if the overall home theater experience is what you're concerned about, consumer research studies have shown time and again that while the audio is an essential part of the experience, the image quality and size is the most important factor in viewers' enjoyment.
Anyway, if rickhunter is curious, I have a 61" 1080p Samsung DLP, Definitive Technology speakers, Energy sub, Panasonic digitally-amped receiver and upconverting DVD player, Felston digital audio delay unit, Monster Power surge suppressor and line filter, two xboxes and one xbox 360 for gaming.