Narcissus and Goldmund is great. It feels like he's re-approaching themes from Siddhartha, but that notion of paths taken is worth exploring again and again.
Agreed! There is definitely overlap between the three books but my recollection of Siddhartha and N&G is that Hesse dwelled more into how hedonic pleasure corrodes the soul. On a side note, you'll get along well with Doestevesky's Brothers Karamazov if you found N&G affecting.
