Your favorite Lovecraft

So for whatever reason, I've only now gotten motivated enough to read some Lovecraft. Who knows why I waited? I love horror and the time period his stuff's set in.
I guess some things happen in their own time.

Anyway - so I read The Dunwich Horror first. And I really liked it. Kinda touch and go at first as I got into his writing style. And had to power through the dialect writing of his characters. Gave me flashbacks of The Adventures of Tom Sawyer - which I worked though and enjoyed, but still. It's work.

So what, esteemed Lovecraft fans, should I read next?]

What are you favorites? Least favorites? Anything to recommend based on my enjoying Dunwich?