Cant agree that VGA is the way to go.
But can on the Optical side.!
I dont or should I say dont want to own an PS3, so cant comment on the sound quality from that to the box.
But we do have out home cinema set up in that way. Absoloutely CRISP.
In my parents house they have had the entire house done by McIntosh, it dosent hold a sub-woofer to fiber optics