It's an AT, the first time i had the brakes worked on was at 36K, I had
the rotors turned and new pads. The reason I thought I wanted either a
larger Diameter or Slotted / Crossed drilled was longer life.

Since I have returned the rotors(@36K) I have about 40% life on the
bads up from now and 50% in the rear, I am now at 75k. I live in San
Diego with many daily trips to LA.

Another question, can you return slotted / cross drilled rotors? Is
there any reason cost wise to go that way? If I spend more on the
Slotted / crossed drilled will there be more life?