component cones/spikes vs. rubber

If you use heavy spikes into a massive board it will effectively dampen vibration which I find sounds best with my all tube amplification.

"DING" the winner is, Mechans, If you use Spikes, or better, pointed brass Footers, you will have a path for vibrations to leave the componant.
If you use soft rubber pucks, or similar, no vibrations will get into your componant, BUT the one`s you have will never get out, either.

They all sound different....not better or worse. Also the materials that they are crafted from affects the overall performance. Brass sounds different than steel, etc. You have to hear it in place in your system to determine what is best for you.

I found that Aurios 1.1 work great with a 2"or 3" maple wood base.
They usually cost around $150.00 or less. Bang for the buck.
I did used these under all my tube gear.

Today
Now have moved over to Finite Cerapucks and Cerabase
$375.00 and up per set.

Stringreen
has it right you got to get 3 or 4 different choices and listen to what U like, as they should all have a different tonal sound.

That is one thing I learned in Audio, you can't go 100% by someone else review, as your system and your room will probably not be the same. read , read and read, audiogon forum...Hope this helps.
Good Luck
P