The site was designed using Fusion Builder on the Avada theme. Well there are too many things to count from which you can choose When selecting a WordPress theme, we recommend looking at the underpinnings to the theme. See if the framework supports multiple types of customization. Try to imagine different scenarios which this theme could potentially not be able to handle. Look at the support and development team which backs up the theme you are going to use. Once you have all these elements considered it really does not matter what theme you use because you can modify any theme to look the way that you want it to look.