Section 104 is one of the best ways to get close to the stage without paying the high price that is associated with floor tickets. For most shows, the view to the stage is completely unobstructed. Some performers will place lighting standards or speakers on the side of the stage so we can't guarantee an unobstructed view, but this is the exception rather than the rule.
The biggest drawback of these seats is that the angle towards the end-stage is very poor. The Yum! Center was built with basketball in mind, so the corner sections are angled towards center court instead of the stage. So just be aware of this when attending a concert. For the Madonna show in January 2016, this issue is partially alleviated by the catwalk and B-stage she has setup near center court. You'll have a perfect angle towards her when she's performing away from the main stage.