I'm trading with a buddy for a Sterling AX40. I really like it, and I've been studying this guitar, as Axis's are out of my price range for the time being, but I'm not opposed to picking up another AX40. I've discovered that there are at least two different versions. One has a soft triangular or perhaps rounded route for the pickup mounts, and the other has a rectangular pickup route, like seen in this video.This seems like a fairly big distinction. Does anyone know what this means? Did they come out of different factories? Is one route style earlier than the other? Judging by pictures the rounded version seems much more common, but the rectangular route as seen in the video must be pretty early as the video is dated 2010. Any thoughts on this would be greatly appreciated.