During the more than thirty years of experimenting with cones, footers and spikes I've come to the conclusion that many of these products shift problem from one frequency to another. Most of them sound like they look or feel, the pointy ones are sharp and the soft ones soft. Sure, some exception as it's interactive with the equipment you put it under but this observation is not far wrong.
For turntables I've had a long running problem finding a device that maintains clear, sharp imaging, great dynamics and transparent high frequencies without sounding artificial, hyped or bright. The solution is the Stillpoints adjustable riser combined with Stillpoints Universal Resonance damper.
Not only will this combination allow you to precisely level your turntable and reduce interaction with the environment, it lets the music flow in a clear natural way.
We often forget that a turntable is a purely mechanical device. Not only the motor but also the mechanism of picking up vibration from the groove with a tiny polished diamond. This is possibly the most demanding place to test the ability of an isolation device and Stillpoints is the clear winner.