Isolation Devices: Any Good Ones?

I'm considering some Isolation devices to place under my Esoteric X-05 CD player. I have actualy tried Stillpoins Ultra SS ($675 for 3) and they did make a difference. I'm interested to hear from those of you who have tried others like Wave Kinetics ($700 for 4), KWO Super Heated Metal Foam Pedestals ($415 for 3), Nordost Sort Kones ($260 for 4) or any others that markedly helped vibration control. Thanks!