All these jugs would work well on a vertical wall, but as you increase the degree of the wall they lose their similarity. Some are challenging on my 45 degree wall, and create quite an experience on the roof where you need to use some creativity in order to hold on to. These holds on the roof make for a fun time when you start using your feet on them. The facet sets all seem to have one thing in common, and that is the fact that they all differ in degree of difficulty. Having sets made like this make buying a set of holds fun to play with. Also, the texture on the facets are next level technology. They are comfortable and grippy, the best of both worlds.