Curtains is really mellow and very good, mostly just him and an acoustic geeeeeeetar. Campfire type shit.
Inside of Emptiness is very raw, loud, dirty rock. Take the angrier moments of Shadows and remove overdubs and good production, and that's sorta what you get with this one. I really dig it.
To Drink Nothing but Water for Six Weeks is widely heralded as his best work, but I've never heard it.