Stans Grails or HED Belgium plus

I recently bought a set of Stans Grails.  A few weeks later I ended up buying a new bike with a set of HED Belgium plus rims laced to DT 350 hubs.  Both are 32 spoke.  Now I have one more wheel set than I need.  I plan to run whichever I keep tubeless and will do as much or more gravel and commuting than I will CX.

Which one is the keeper?  Admittedly, I don't have much knowledge of the HED Belgium's.

Thanks for your input.