Which cone's or platforms have helped?

Put cones under everything. Your ears will be very happy. If you don't have them, already, on the bottom of your rack legs: PUT THEM THERE too. I have not compared them, but I use Audiopoints cones and am very happy with the sound. You can really go nuts with these cones and suffer the law of diminishing returns. Call Robert over at Audiopoints. He's really into resonance transference and will give you the scoop. His cones are very reasonable. You should get another 10 posts, at least, about this topic. The same people, including myself, will talk about this adnauseam...I love it, though. It's what I love about the Hi-End audio game.

When and if you use a loading device it should be a solid metal. Not sand or lead. The idea is not to absorb vibrations, but transfer them to the ground. There are many vibrations that are good and you don't want to lose them. Robert over at Star Sound Technologies is doing some amazing things with this concept. His precision made brass cones are doing the job, and his speaker stands and component stands are drop dead amazing. Both, utilizing the resonance transference concept. I truly believe that his stands are the cutting edge, and it's just a matter of time before they become a ubiquitous HI END name. All your components sit on a stand. You want the bad resonances to move away from your equipment and go to the floor. .

Like I said (thanks audiotweak) 30 posts ago. Cones under everything. You want to transfer resonance, not absorb. Your ears will love it. You don't mixed the two, like the tweakman said. Make a comittment to do one, listen, then do the other. Your ears will know the deal. It's a wild out there. Some transfer, some absorb. I'm a tansferer, and very happy for it..

Well, Tennispro? You started (thread) this baby. Got enough? I certainly have. You got a lot of good stuff to make a good sonic decision. Let's put this baby to bed guys..