Back roads was my choice.

I like the comment about trails. I did two boring as all get out trails during my recent tour from VT to PA. Fortunately, they were only 3 and 4 miles long, respectively. The latter was basically a tunnel of trees with only one distant view of a nearby mountain range. Adventure Cycling substituted this trail mileage for a very pretty stretch of road riding that has better mountain views, etc. To make matters worse, you then had to circle around via not the best roads to join back up with where you would have gotten to had you stuck with the original routing. It seems like trail miles for the sake of trail miles. Overall, the new routing is a large, net loss of pleasantry, and it adds 4 miles and hundreds of feet of climbing.