Another thing to take into consideration is that the component, regardless of technology, is only as good as its parts. I have heard Dolby Prologic processors that sound better then some AC 3 processors.
I would bet that a three year old $2500 used processor that retailed for $5500 would sound better then a brand new $2500 processor with all the current technology.
I would bet that a three year old $2500 used processor that retailed for $5500 would sound better then a brand new $2500 processor with all the current technology.