The original Silent Hill will always have a special place within disturbed depths of my subconscious.
Souls is probably still more accurate but I think Silent Hill is actually a really interesting comparison for those that played it way back.
Silent Hill generally is a great game. Just played the first part the other day.
The great thing about Silent hill is that it makes you feel powerless and exploits you psychologically and all the monsters etc. are also a reflection.
Generally Silen Hill seems to play on a lot of fears, just the setting with the town, where the fire is still burning below that people can't life there is a great parallel to something like Chernobyl which was much more a scenario of constant fear for the people as it was released.
A lot of great eerie games manage to play on fears which are in the subconscious of people at a time, another example would be Majora's Mask and the upcoming Millenium back then.