There are many different options to choose from when it comes to building a pergola. Like most things, there is a wide range of pricing and quality of materials.
One thing I kept in mind was all the exposure it gets to the elements. We live in an area that has four very different seasons, and along with that comes every kind of weather you can imagine. I knew it had to be sturdy and hold up well under all types of weather conditions.
We finally decided on a wooden one and bought a cedar pergola kit. The look of the cedar adds a lot of quality to it and so far it has made it through 3 years of unpredictable weather.