Joel, you said exactly what I meant... I over-generalized. I see very little reason to NOT use all 65536 steps. Just for giggles, I've taken a look at some (what are supposed to be) audiophile CDs of "quiet" music like violin concertos and the like only to find that they're using only 20-25%...
I wouldn't always blame it on compression. I've ripped CDs only to find that the the peak amplitude doesn't come anywhere near to the maximum 16-bit level. That seems incredibly stupid... it's like mastering the CD at 10 or 12 bits when 16 is available. Makes no sense. So, I can perceive of...