With a bag of Taylormade Rockets, Spider etc, I have stopped asking such questions.
I think the right answer is Magna. It was an interesting experience for him and he thinks it helped him. He is off 24 and had never heard or used one before - so there might be something in it after all.
Also interesting to know that a bigger ball is not classified as non-conforming, but a smaller one is - while a longer putter/driver may be non-conforming but not a smaller one...
