I've been working through classics and they are usually a bit dated. Dune is goodish, but also I prefer the new movies for their much better treatment of women, the Fremen, and removal of the wierder parts. Neuromancer feels like Gibson wrote it with one hand and has never spoken to a woman in his life.

I remember loving Roadside Picnic a while back. If you want to be incredibly sad, Han Kang's Human Acts is brutal but beautifully written.