charlie arms are the best, so strong they are actually stronger than the frame of the car.
one concern from local racers is that they are so strong that if the wheel hits a curb or something, the arm survives but ends up damaging the frame. since the cost of replacing an arm is cheaper than repairing the frame, some local racers have converted back to the factory arm.
that being said, i would still be in for a charlie arm if they're made again.