I'm a full-on Dark Candles freak. I highly recommend all of Helena's wares. If you get on her emailing list, she periodically sends out coupon codes and lets you know what specials she has going.
IIRC Haunted House is similar to Yankee Candles' Witches Brew which = patchouli and cinnamon primarily. More patch than anything else, but since I'm a patch ho, it's all good!
FYI BadTableManor, Silver Bullet has been reintroduced as Holy Water after customers freaked over it being discontinued. It's one of my faves so I'm glad it was pulled back from the brink.
For cemetery ambience, I use a tart/oil warmer with some of Helena's simmering oils. The oils have a lot of fragrance "throw" and are cost effective enough to use H-ween night. Haunted House, Crypt Moss, Autumn Harvest, Falling Leaves, and Graveyard are really nice for an outdoorsy feel
I bet Bonfire and Coffin would be good in a cemetery too, but I haven't tried either of those...