I love the shape of this rail - it has so much character. One side is definitely more positive than the other so set it for your skill level. I prefer the more positive edge because with the Atomik 2.0 texture I need that little bit of extra "positivity". I also love the Golfus line of holds. I really don't think they randomly "dimple" these holds because my fingers after searching around always seem to find that perfect fit. I don't know about everyone else but you can definitely tell which holds get used the most on my wall because they get the most chalk. I've abused mine - lol. If you're using the more positive side you can also get a decent thumb scum on the opposing side too. Once again, a great, massive rail that'll add challenge to any wall.