Brakes are pretty important, whike Zimmerman is good using the logic of brakes are brakes is no good. Cheap stuff will warp easier wear down faster and worse yet you could have a rotor crack. If you just city drive I wouldn't go all out but get atleast OEM grade. Breaking and suspension are two parts of the car that cutting corners and costs can lead to some pretty bad situations.
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Formula SAE "Speed is Sexy"