I’ve built 5 sites with the Swift free and got to know it real well. I would go in and change a lot of meta data on individual files, add custom CSS for backgrounds on the sidebars. The last site I did, I wrote lines of css. I finally broke down and bought the pro for 2 of my sites. I love it! The pro really adds a lot of functionality. Still getting used to some of the new IDs and classes but I like it! Got used to the grid in the free version but with the shortcode column functionality, it’s easier than ever. I’ve only played with it today, but so far so great!