Re: data books
+1,000,000!!!! Great product from people who know what they are doing and take pride in making the best available to the members here on the Hide (and elsewhere).
Impact makes one hell of a nice product that, unlike many other options on the market, you can customize to fit your needs. I have one of their full-size books that I have been using with great success for a while now. I am getting ready to order a pocket-size book to try out the smaller size.
Take a look at the site linked to above, get an idea of what all you want/need in terms of pages, and get your order in. They'll take excellent care of you!