Basic anti vibration? Cones vs pods? Is there "good enough solution"?

I started with pods between the component and the MDF shelf and switched to Cones onto a granite tile with thin foam drawer liner between the tile and the MDF shelf. I now experience very detailed and crisp sound form my system

I found too much damping of the pods tended to muddy the sound.

With either method - be sure to experiment with the position of the cone or pod under the component

E.G. With solid state amps (and my phono stage), I found locating a cone/pod under the transformer (or one either side of it) provided the best sound

However - tube amps are a different beast and normally have a very strong chassis, so placement can by quite different

I only use three feet to achieve max stability

The position of the feet in my turntable is shown at the bottom of this link
http://image99.net/blog/files/505119d0be04fa00f053d1e3491df5c8-80.html

Hope that helps - Steve

@bkeske - you wrote

As my cones have, essentially, a small steel ball contact point

Are they are like the Vibrapod?
http://vibrapod.com/vibrapodcone.htm

You should be able to improve things with a ceramic tile with a layer of this foam between the shelf and the tile...
https://www.duckbrand.com/products/shelf-liner-bath/non-adhesive-shelf-liner

Granite is getter because of the higher mass

The key to controlling vibrations in a shelf is to make a sandwich of materials having very different densities. But for the foam layer - thinner is often better.

Sorbothane is commonly used, but too much can muddy the details. I use the 1/10" thick sorbothane to dampen between the shelf and the supporting struts of my steel rack.

Before moving to the more expensive Bronze/Brass cones I tried hardwood cones and they were surprisingly good, which then tempted me to try the Brass cones.

The bronze/brass cones I had made by a guy in the area that turns bearings and bushings. I had five sets of three made in different size=s for around $200

Regards - Steve

+1 what @stringreen said - I tried steel, glass, wood and Brass/Bronze on my granite tiles.

Steel and glass sounded a little "brittle" and "harsh"

Wood was a little "mellow" compared to the Bonze/Brass, but much better than the Steel and glass

The Bronze/Brass cones provided the best sound for my system 
- more dynamic with improved details and clarity over the wood
Hope that helps - Steve