Recommend a GOOD recording in hi res file?

Hello from US Embassy Baghdad! My big system is in storage but I have a decent one here, based on the Dragonfly. I'd like to try some hi res audio but don't want to pay for a very high fiedility version of a lousy recording. Could you please suggest hi res albums that you've actually downloaded and can suggest based on their recording quality? My tastes are classic rock, blues and smooth jazz. Just surfing the sites for a minute, Steely Dan Gaucho and Elton John Madman across the water caught my eye.