People sell them secondhand on here for cheap. Mate put a SAFC II onto his rb25 and make pretty good power increase, as it's acting like a simple/cheap tune but a aftermarket ecu would be the way to go.
2 x Rear R32 GTST Calipers, pads (90% meat left on all 4), brake lines (One pair has braded) and rear disks. Seals arent split and look to have been replaced recently. $200 ono a pair. Pm me for more information.
Seriously its upto personal choice. People can say Nistune, Power fc all they like at the end of they day you get and do what you want to your own car! Different tuners will say different things i like power fc because of.. I hate Nistune because of this.. At the end of the day on a modified car any aftermarket ecu is better than stockie. Just look past some of the bullshit people will say and make your own choice based on your own opinion.