Just want to strongly second Kelly's mention of Warner Bros' use of Quiex pressings. (did any other label use Quiex?)
Two recordings that blew me away sonically AND MUSICALLY, that I have on Quiex, were;
Donald Fagen: The Nightfly
Paul Simon: Hearts and Bones
Both early digitals(amazingly) from 82, 83 era. I treat those 2,on Quiex,like fine wine.I preserve those pressings for a special listening occasion. Quiex was high end right from the source. Now if I could only find a Quiex of the debut Rikki Lee Jones, or Little Feat's, Time Love's a Hero, I would, well you know!!........Frank