Gaia versus Mapleshades

No experience with Mapleshade. But GAIA made good improvements in my system - for loudspeakers and components.

I've tried  both & the Mapleshade's are the winner in my system.

2 cents worth.

 https://www.ginkgoaudio.com/product-category/vcs/arch/

If you call Mapleshade, Eldon, the owner is a very nice guy who will be happy to expound on why he believes his products are better. Unless you're already committed to the Sapele, I'd consider Mapleshade's Ambrosia Maple platforms also. I just finished upgrading all three(one at a time) racks in my system with their Samson racks and isolation feet, and wife and I are very happy. 

I think it most lucky depends on what type of floor you have whether it’s best to couple or decouple. If your floor is very solid, cement slab topped with tile or wood or even carpet, then coupling to it w/ spikes & the like works well. If your floor is a suspended floor w/ long floor joists like most homes have other than the basement, then decoupling the speakers from the floor can work well. 
 

My own experience w/ both types of situations over several years has shown this to be generally accurate.