I've got a '03 V6 (not super charged). I got this really as reference to help a buddy and me replace my timing belt (he's all but a professional mechanic) and am planning on figuring out what maintenance I can do on my own. This book has left me with a complete 50/50 feeling. It covers such a broad range of years, as most after market manuals do, that I found my Frontier to be just a little different than what's described in the book. It's definitely gotten me through some jobs but has also left me standing and scratching my head. It's a good starting point but I would recommend walking through every project comparing the book to your actual truck as best you can before starting anything. Despite what other reviews have said, I wouldn't tear down and rebuild my truck with this, but, combined with forums and blogs online, it's good too have.
Compared to the Haynes, I'd get the Chilton.