This site is pretty fast, don’t you think? There are several reasons for this, and the WordPress theme it uses is one of those reasons. It uses GeneratePress.
GeneratePress is what we use for most of our websites in Devenia, with a couple exceptions.
I like GeneratePress a lot, and the speed it loads is one of the reasons I like it so much. Since SEO is my main focus, a fast loading site is very important to rank. So, naturally I look at all aspects of what helps the site rank.
Give GeneratePress a try. You will find it in the dashboard of your WordPress install under add new theme.