The real difference between the two is the narrator; where Nina is bored and boring, Toby is full of energy and typical teen boy-ness. Catherine Jinks' conception of vampires was amusing, but reading about a bunch of folks who do nothing but whine is no fun. Toby whines, but he also tries to change his circumstances. He also has a clear personality, unlike the vampires (who show up in this book and still remain static characters).
I still have some issues with Jinks' worldbuilding. Becoming a werewolf is evidently an inherited trait, found only in families of Spanish or Portuguese backgrounds. Not only that, but they have to be the seventh sons. Yikes but that's specific. The book even says that werewolves are typically found in South America and the Phillipines (although nothing is mentioned about Spain or Portugal...), so why are there so many werewolves running around Australia (not to mention so many werewolves in general)? With vampires, too, I am a bit concerned about their origin. Apparently, one bite turns a human into a vampire. If it's that easy, why is the world not populated entirely with very hungry vampires? Sure, the group tries not to fang folks, but all vampires cannot be that particular, especially in early days.
Overall, this was an okay read, but, should there be more books in this series, I will not be continuing on. This one was good enough to give me some hope for Jinks' other series about geniuses (of which I own the first book).