Last House for me. Absolutely love this movie.
Original Nightmare is class and by far the best of the series.
Hills have eyes and People under the stairs are also up there in my faves.
Also have a soft spot for Serpent and the rainbow and Shocker.
I watched Deadly friend endless times as I was a huge fan of Kristy Swanson when I was a young hormonal teenager.
Love the basketball death in this.