I've been rereading Sandman. It's full of amazing art, but the absolute most moving piece is the two-page spread in The Kindly Ones where... well, no spoilers just in case someone here hasn't read it yet, but yeah. That one.
Whenever a few years accumulate since the last time I read it, I always think Delirium is my favorite. But when I refresh my memory -- no, it's definitely Death.