She's getting keen! The 4 pad calipers (P34's I believe they are referred to as) are awesome. But, I now have the 996, 998R and the Monster and the bike that brakes the best .... the Monster!!! The brake system on the monster is the standard twin disk setup apart from using Performance Friction pads. Yes they are THAT good! The P34's are close and would be awesome with PF pads as well but at the moment the monster wins. It would be a cheaper option to get the standard calipers, the ones on my monster are the same as the 996 and are 65mm mounts, and put some decent pads and fluid in it.
I can't wait to put a set of PF pads in the P34's!