Yeah, this indeed was a difficult choice. There were A LOT of excellent quality maps. I ultimately voted based on the concept of the challenge regarding ebooks... I've seen maps resolve not so well on some ebooks--even greyscale ones--so I voted based on which ones in my opinion would display the best on an e-reader, followed by which ones I felt were most innovative and appealing. That was the only near-objective benchmark I could think of. Well, in terms of the e-reader display aspect.