I was in the process of mounting the boxes for sconce lights and I noticed that the boxes are rather imprecise and difficult to mount. I'm reasonably sure I didn't have cheap boxes and when I looked around I only found them in this style, or some facimile thereof.
Are there better choices for mounting sconces? I would prefer non-metallic, as then it would have to be grounded as well. Small job, but it adds to the tasks.