I read Vampire$ a few months before the movie arrived in theaters and I love it. This book has been probably the best book I read that year. Then I went to see the movie, it's good, but if you have read the book, do yourself a favor, don't see the movie. If you've seen the movie you'll notice that it's a good movie, but a bad adaptation of a great novel.
Vampire$ is something different, when you read this novel, you need to forget about other Vampire classic novels (like I am Legend, Interview with the Vampire, etc), this is totally different and it will blow your mind away. I'll love the way Steakly introduce the characters, specially the mysterious Felix, which turn to be the main character of the novel, not Jack Crow (like the movie). The way John introduces the characters, the way he developed them, amazing.
If you like a good Vampire, action, intriguing novel, Vampire$ is your choice. When you read Vampire$ (if you've read John Steakly's Armor), you'll say "What a coincidence, in both of his novels, the main characters are the same, Jack Crow and Felix". But, most intriguing is that in both novels Felix is this mysterious guy that you want to know more about him.