Yeah, Direct mode for 2 channel... nothing fancy in the chain, just a BD / DVD / SACD player to the Denon. There are definitely huge differences going on with certain recordings, either the recording, mixing, mastering, or some combination, because certain discs sound great (Jim's demo disc is full of great sounding stuff), while others are noticeably not as good. Obviously they're all getting played through the same electronics right now... I think there is probably going to be a gap between these recordings no matter what I play them through. Fortunately, even the not-as-good ones are fine... they're just not what I would choose to play if I was trying to impress someone.
I have wondered if there is a way to hook up a dedicated 2 channel preamp, but only use it for certain sources, and use the HT receiver for multichannel stuff. If there is a way to set that up without having to swap cables every time I want to go back and forth, that would be something I might consider at some point. Right now, there is no more $$ left in the fun-fund, and I know if I start looking at preamps etc., I'll get into expensive things in a hurry.