VPI Scoutmaster with Super Platter

Come on Stingreen and Cerrot, give us details about the sonic improvements wrought by the Super Platter, I've thought about getting one as well. Is is the most cost effective VPI upgrade, and if not, which VPI upgrades are best bang for buck and/or first to get?

The SDS, IMO, will give the most bang for the buck. And by a long shot.

I found the periphery ring to give more of an improvement than the SDS. Roy Gregory (of HiFi + or some such magazine) also found the same thing. His review can be found online and he talks in detail about this.