I'm glad you like the demo. I picked up Sandvox when it first came out. I only have the Sandvox Pro version because Karelia gave beta users a price we couldn't refuse.
Unless you see the need to use HTML snippets or insert Google Analytics code into your website, you might want to stay with the regular edition.
Both my own website (
http://www.ripon89.us) and the website for the Windows user group that I belong to (
http://www.ripon89.us/necc) were created and are updated using Sandvox.
Bob C