Here is a great theme. I went through a┬ábit of a learning curve when I started working with it. It doesn’t work quite like your standard theme. At least when you want to create a custom template its not. It uses hooks and filters to manage the different parts of the page. Its different but I have found it quite easy. And Genesis is one of the biggest framework themes out there. So my child themes don’t need to worry about it being discontinued and updates stopped.