People that I know comment that using or upgrading to r32 brakes/pads, make the car more snatchy under braking, most properly due to the fact, the weight of the car on the GTi is 200 kilos lighter and making them too aggressive rather than being more progressive.
I have no issues with the stock brakes for normal road usage . Only when pushing on or going at break neck speeds and braking late, is more dangerous then having brakes that may snatch and catch you out.
Just my opinion and I'm waiting to be shot at

I'm not talking race track usage here before anyone pipes up

As I've read somewhere, uprated Pads will help performance.