I bought two light sets for our pergola.  They were easy to hang.  One bulb was bad but there is a replacement bulb included with each set.  I like having the pergola lit up at night so we can enjoy the evenings outside.  The reason I cannot rate these higher is because they only stay lit for about 2 1/2 hours per night.  I am hoping it's because some of our days have been cloudy, but even with great sunshiny days, these lights do not stay on very long.