Where should I start? (Which SSG for a storefront site?)

Hi there, I’m new to SSGs (have used Wordpress in the past, but I’m getting tired of plugins and updates etc), and I’d like to start by making a new storefront for my partner. Which SSG should I use? Does it really matter?

I should have said, I’m more of a GUI person than CLI, so anything that makes it easier — templates, themes, etc — would help.