We do not use any of those calibrations as a base for tuning. Those calibrations are within the DPC-422 family, but they are not the preferred codes. As to which one is the best of the listed calibrations, I am not sure. The best stock PCM calibration for the DPC-422, would be a PMT1 in most peoples opinion. However, the stock PMT1 calibration does not have the best transmission strategies, so therefor we modify the PMT1 file when we flash a stock tune.
What is it that you are trying to do with the PCM?