I originally started reading Vatta's War: Trading in danger because it was the only SF book my local bookshop had in that looked remotely appealing (and that I hadn't already read).
I am so glad I did. Vatta's War is turning out to be one of my favourite SF series and this, the fourth book, is almost impossible to put down (suffice to say I am running low on sleep ;))
As the series progresses numerous sub-plots and characters are evolving wonderfully, and unlike many books (including some bestsellers) I am drawn into every one of them, turning each page without a thought as I plunge towards each milestone.
Roll on Book 5.