Besides the Piledriver I would also check out the BG Flat 50, which can do heavy rock and maybe some metal easily. I would pick a calibrated set for a good balance.
It's true that people like to mix different humbuckers, bec they have special requirements or the guitar demands a specific pickup (more mids, or darker voiced etc). Or for them balance between bridge and neck is not that important. In general the calibrated sets are very well balanced.