I'll go with Christopher Young, since he composed Hellraiser and Hellbound: Hellraiser II... which probably get more CD plays than any other soundtrack in my collection. I love a lot of "horror" composers, but none quite hit me like those two scores.
"Through unlit corridors of purest oblivion.
Submerged in a sea of darkness without end.
To feel nothing...hear nothing...for a thousand eternities." - Evoken - Quietus