I prefer Aurio Pro Max Bearing with 5/8" Tungsten Balls to float and decouple the Theta Compli from my rack and found that sounded better than it resting on Maple on Audiopoints, DH Cones, Vibrapods, BDR cones/those things. I do prefer having my Theta GenVIII on maple with the stock footers.
I never tried the Mapleshade Brass footers.