Beautiful, useful, and creative!!! Checks ALL THREE categories for me. The layouts are simply beautiful to look at and browse through. Likewise, the formatting and writing get straight to the point and conveys a lot of information very clearly and quickly. There's no fluff at all--everything is important, evocative, and simply cool to read and run.

It's a little expensive for a PDF, but honestly quite reasonable for what you're getting. The hard-cover version (on Amazon) is also flawless!