The HE-500s sound absolutely amazing with remastered classic rock albums. I have ordered about 10 others, but the following SHM-CDs are examples of this:
Kiss: Love Gun
Deep Purple: Burn
and SHM-SACD (single layer):
They are available from a number of sellers on Ebay as well as CDJapan.co.jp. Really expensive for us because of the exchange rate, but worth every penny, especially when played on a high-end system.