HH and I are always going back and forth about HS vs HSL. I still say that HSL gives an equal number of mission availablities, it's just some are different missions (CSAR vs ASU/surface classification and targeting). And on the Pacific side of things, ASW is definitely a top priority.
CSAR stands for Combat Search and Rescue. Basically going over the beach and picking up a friendly in bad guy land, either with, or by SEALs, or some other direct action troops. Very sexy.
(And I can read the forums again! Thanks John!)
EDIT: Bah, you beat me to it.