What brass cones are the best?

I'm looking at brass cones for my system. I'm wondering if any of you have experimented with Mapleshade Triplepoints vs. Audiopoints vs Black Diamond? I hear differences but am not sure which is better. I would like your opinions/experiences especially with Levinson gear.
I'm also considering the differnces between buying four threaded cones for each piece to replace the Levinson feet is better than just using three cones underneath the components.
I currently make a sandwich with cones underneath the component, then quarter inch glass, than Vibrapods.
This combination is better than just cones or Vibrapods. I use various combos of Vibrapods underneath each component to tune them. Please feel free to examine my system.