How come you went R32 over Z32? do you miss the VCT?
NisTune is great because it ( A )- Looks Stock, ( B ) Has stock everything, but can be changed... don't have to worry about knock etc, ECU detects it, it goes into save motor mode... Lift the speed, rev, boost, airflow cuts, do the fuel/timing map, enjoy... and no one is the wiser... I don't see why a PowerFc would be soooo much better...