These are my favorites, they may not be the best to some but I like them the most:)

1. I am Legend by Richard Matheson

2. Fledgling by Octavia E. Butler

3. Let the right one in by John Ajvide Lindqvist

4. Fevre Dream by George R.R Martin

5. Some of your blood by Theodore Sturgeon

This time the numbers mean something, I enjoyed Dracula the least out of all these books. It is very dated, but still very influential. 2 runners up are Bloodsucking Fiends, and You Suck: A Love story both by Christopher moore:D