I think the standard brakes on the Gti are average for such a heavy car for everyday day use,
As soon as you drive the car hard ie on track it is a must to upgrade, after just a couple of laps They really start to go downhill and fade very badly, I would expect to upgrade as they are not built for such hard driving,
I think Vw should of put better calipers on as standard tho, at least 4 pot Brembos IMO