I demoed a used 16" evo wand and it had some issues. The most major was the warped head and
glide that did not seal completely on glued down commercial. It also hopped bad. The spray pattern was also way off. I've heard that evos don't spray all the way to the edges. So someone apparently bent the manifold brackets over to the right so it would at least clean one edge. I also cleaned a residential job with it and it did a little better. But the enormous 16" head had me grabbing for my PC Quad to trim the tight spots. For close to a grand in price there are many better choices.