Just to add from personal experience. I just changed stock brakes to RDA slotted and dimpled, remsa pads and some fresh super dot 4 fluid and initially I was a bit let down, but having done about 100kms or so on it now the pedal is more responsive and theres more feel to the brakes. Around town braking they are a fair amount better than standard. Pulled up fairly well on some hard braking aswell, yet to do any high speed stops with them yet. expecting them to get a little better with a few more kms on them aswell. I can't compare to DBA, only to 6/4 brembo's which are incredible, put for the $500 or so I paid for the upgrade it got rid of my shudder and is more than enough of an upgrade for a car that doesn't see a track