I’ve always been a fan of Woo themes. The themes are built on a great framework and Woo’s support has always been top notch in my experience. One of my favorite theme’s by them is Spectrum. It’s clean, modern, and very flexible if you want to customize it for your own site. You’ve probably seen the theme many times in different shapes and forms across the web. One customization I particularly like is done by this solar panel site.
Additionally, you can also take a look at CentralFire to see another example.