My brakes are vibrating above ~40mph on the highway. I've tried the fast braking thing to see if theres deposits on the brake rotors, and I thought it helped for a while, but its back. So now I'm assuming my rotors are warped. What are some good decent brake rotors and pads that I can buy. I just spent $700 getting my new tires, a new tie rod and an alignment, so I'd like to save as much money as possible.