Which are the five greatest works by Richard Strauss in your opinion?

I don't listen to R. Strauss all that much but I picked three operas, Metamorphosen, and Death and Transfiguration. I know it's heresy around here but I really don't know the Four Last Songs all that well. Salome by Bohm, Elektra, and Die Frau Ohne Shatten are three operas I found at used shops and I enjoy these. I listen to the orchestral pieces by Klemperer. I have the Kempe box but I haven't really gotten into it yet.

I'm doing a R. Strauss marathon on YouTube watching the Frankfurt Radio Symphony so I have to add Ein Heldenleben to my favorites.

My wife and I are listening to a couple of discs from the Kempe box this evening. These CDs sound very good! The strings of the Staatskapelle Dresden sound beautiful!