You know, I used to think nothing could top the classic cosmic dread of Lovecraft until I read 'The Shining' alone during a snowstorm. That isolation, the slow unraveling of a mind inside a labyrinth—it’s a deeper chill than any monster. Stephen King has a way of making you feel the walls close in, literally. Lately though, 'The Haunting of Hill House' by Shirley Jackson messed me up in a quieter way. It’s not about what you see, but what the house makes you believe about yourself. The horror feels earned and personal, sticking with you long after you turn the light off.
Some modern stuff tries too hard with gore. I prefer the psychological build-up, where the fear comes from a place of recognition. Like in 'Pet Sematary'—the grief is more terrifying than the resurrected cat. That book made me get up and check on my kid twice in one night, which never happens with slasher plots.