I have about 40 DVD-A and SACD (about 20 each), so it is hard to narrow it down since I really like most of them. For DVD-A, a few of my favorites are Yes Fragile, Steely Dan Everything Must Go, Neil Young On the Beach, Porcupine Tree In Absentia, and Grateful Dead Workingman's Dead and American Beauty.
For SACD, a few of my favorites are DSOTM, Dylan Blood on the Tracks, Billy Joel The Stranger, Elton John GBYBR, Who Tommy, and Stones Beggars Banquet.
There really are a bunch more I could list, but these are all really solid.
