OPA2604 vs OPA2107

wondering has anyone compare the above op amp. before ? Which one do you prefer ?

try to read this :
http://www.audiokarma.org/forums/archive/index.php/t-72808.html

from my understanding, opa2604 works best at 20v or higher voltage, it really sings. since im just a plain audio listener rather than diy modders, any idea on how to jack up the voltage? i notice my cdp is using opa2604 & would like to hear the difference through this tweaking.