I use a Harmonic Resolutions Systems ADH record weight and the improvement vs. the standard VPI delrin clamp is beyond dramatic. There may be "better" (in a given system) clamps/weights out there for more money, but I doubt you can buy a better record weight for $400, which is what the ADH costs.
Btw, I use the ADH with the VPI periphery ring.
Btw, I use the ADH with the VPI periphery ring.