Best Footers for DAC?


In January, I plan to acquire my first standalone DAC and am wondering what to try for footers. I currently have original Stillpoints cones under the CDP which will act as transport and a Symposium shelf under my integrated. 
These work well.

In the past, I've tried and been disappointed by Stillpoints Ultra SS and Ultra Minis, brass footers, Cardas myrtle blocks and Vibropods. Are there any products that work particularly well under DACs ? ? ? ? 

I have yet to decide whether DAC will sit atop transport or on its own shelf, so I'd appreciate suggestions for both scenarios, please. 
stuartk
I like Stillpoints SS minis under my N10. I preferred them over Symposium Rollerballs. I do like a Symposium Svelte Shelf under every component.
This is your brain. 🥚 This is your brain on drugs. 🍳 Just yolking.
I don't understand!
Aren't DACs fully solid state components with no moving parts? Why bother with isolation?  Are there any scientific reason behind the need for this?
curious...