How hard do you drive your car at the moment wonkey?
I had godspeed grooved disks and kevlar pads and later on blue stuff on the same disks with the same 4 pot calipers on a classic STI wagon, (spirited driving, not track), running a little over 330bhp.
The kevlar pads where dreadful and I would not buy ever again. The bluestuff where decent and you had to push very hard to make them fade.
As others have stated the best bet is a secound hand set of brembo's but if the wife is getting the car next year I would be very tempted to get a set of normal groved disks and some decent pads ds2500's /performance friction or even the bluestuff....Then again how hard does your wife drive?
