I've had my pads & rotors on for over 2 years.
The rotors did get a bit glazed after a year and a half but were not warped at all. That included 2 autocrosses and my normal daily hard driving.
When I had the car apart last fall I scuffed them up & cleaned them and they have been good so far. I can see they are glazing over again though.
Yes I am VERY hard on my brakes as I love to actually "drive" my car like it should be every time I get in it. Hundreds if not thousands of high speed stops too.

(All that testing takes it toll)
I have noticed a hair of light "singing" when they are hot but only the last few seconds when coming to a complete stop. They never make a peep in normal or lightly spirited driving.
I think this is the best setup for the street or light track use.
If I had the "free" money I would get larger front brakes like what TCE sells. They would be my only upgrade choice over the much heavier BAER brake kits.
However this setup has certainly shown the limits of what the stock SVT setup can do. Very good performance for such a low price.