Drilled rotors help with ridding of heat but guess what helps even more... ducts that deliver cold air to the rotors. I posted a link a while ago to a mini cooper forum where they would take out their fog lights then run piping to the rotor from the back of the foglight opening. THAT seemed to enable them to be able to autocross their mini's with stock brakes more-so than anything else.
Personally for the the street, try better pads, then the 12" rotors then LS1/ C5 calipers. (preferably C5's since they're smaller in piston displacement hence better brake feel), smaller brake booster (from the impala) and then maybe venting your brakes as mentioned above.
Just get some raybestos or centric rotors since they wont rust and are US made so they shouldn't warp.
When people think they have warping, they should try rebedding their pads first before getting new rotors or getting them turned... most of the time its just you exceeding the heat range of your pads.
