It will be the SC64w HI with better tint and CRI, hopefully a little more efficient. That’s it. It’s good enough for me to justify the upgrade, as long as the throw is the same or more.It's nice to see a new offering, however, I'm struggling with what this light for me that can't be done with my SC64w HI. I know it has a higher CRI and "better" circuit, but...........