Carbotech pads, IMHO are in a class of their own. They have tremendous friction, even at very low temps, very good feel, yet they are entirely rotor friendly for you guys that daily drive your car. A bone cold XP8 or XP10 will have more initial bite then the OEM pad, and most definitely improve braking performance across the board. Give them a try, and I am sure you will be convinced.
Most of the typical track pads we have used such as the PFC01, require a warm up, and are very hard on rotors.
With respect to noise, they actually make very little noise under hard track braking. But they can make some noise-squeek under very light braking, such as pulling into the paddock....or Starbucks.
Hope that helps. We run Carbotech pretty much exclusively on the GT-R and we are having some made for our 370z StopTech racing calipers.