When applying the brake, I feel a slight speed dependant oscillation through the steering wheel. Normally, this is a symptom of rotor warpage... In the past, a quick trip to a local machine shop and $15 later, problem solved...
I understand that removing material from the rotor results in less thermal mass (rotors will heat more quickly during braking and warp quicker.) However, if I get another 20-30k miles (3-4 years) out of the rotors, great!