Maybe it's worth noting that I'm left handed. I bring this up only as a bit of clarification; to avoid perching my drawing hand on a metal spiral, my sketchbooks are all backwards. I've been using the same brand and scale since Fall of 1997 with only a few exceptions. The covers all look sort of like this:
The insides often look like this. I do an awful lot of my sketching in places where people are happy to ignore their close neighbors.