Won't get into which is safer, but having had both I can say that the PD tune by Ryan makes the car SIGNIFICANTLY quicker than the FP tune.
Just don't be stupid, take good care and don't floor it while cold and avoid high gear/low RPM WOT's
Of course any tune that brings more boost than the...
Ended installing a resonator to my Magnaflow catback. Cold start drone was too much (Garage under master bedroom.....wife not happy).
Now it's quieter, no drone and perfect volume in my opinion.