Best Batman stories?

I’ve been wanting to read some Batman lately, but I don’t know which stories I should be after. Growing up, I dug The Bat, but I never read the comics. So, what are some reckos? I’ve always heard Hush is great. What about The Killing Joke? Is Knightfall any good? Anything that’s graphic novel would be great, so I can download it straight up and don’t have to hunt them down one by one.