Umm...if you process your hi-res source the same way you process a cd, i.e. Logic 7, well, the hi-res source won't sound that different. That's kinda not the point of a hi-res source. Re-digitizing (nice word!) a hi-res source makes it just the same as any other analog source your might have. Your processor is still doing the same converting. It might be cleaner, than say vinyl, but your still taking an analog source and making it digital.

I admit that SACD doesn't have all that many great multi-channel mixes on the market at the moment. I'll also admit that Logic 7 encoded 2 channel mixes may sound better than 2 channel SACD sourcs. It just when you say something like :

you're missing the point.