This is funny question... Sound Blaster ZxR + Pioneer SP PK52FS 5.1 Speaker System + Pioneer VSX1131 7.2 160W per channel receiver
is best at the moment sound under 1000$. And could be compared with far more expensive systems.
You can't imagine how sound games and movies with that and speakers quality.
And only SB ZxR compare with SupremeFX is like most powerfull Mercedes with FIAT.
Card cost 230-250$ more than most motherboards, how could be compared with onboard sound.