Hello every, its time to replace my brake pads and rotors. I found out that the f-sport rotors are a lot more expensive than the base model rotors. There are even cheaper aftermarket rotors. My question is, is the performance of the f-sport rotors notable enough to pay 450 per rotor or should I just get the base or aftermarket rotors?

Are you asking because you want to put GS350 rotors on your 98-05 GS, or because you have an F-Sport and got lost on your way to the 4th gen GS section?
Either way, the rotors are interchangeable (as in they can all be installed on the same cars) but not the same size, so if you already have the F-Sport calipers you must use the F-Sport rotors.