Smooth is the fastest way around the track. The problem is most folks that race a couple times a year get on a track and the adrenaline flows and the driver starts looking like goofy throwing the car around and dumping the clutch on accel and decel and it can kill a street disc in one time out. Even a good driver wanting be smooth tends to fan the clutch coming off a corner. The 6 puck is a better choice because even when a good driver screws up,the clutch can handle the abuse.