I don't have a ton of experience (when I was a member at 4GEA, somebody started a long discussion about it, so
I tried it without any noticeable results). But, I bought a Ping G driver earlier this summer, equipped with the Alta shaft. In reading about the Alta I found out that Ping moved weight higher up in the shaft, which allowed them to
add more weight to the head (marketing hype???). I don't know if that's the reason, but I noticed about 10
yards extra distance immediately over any of the component drivers I had been using, and that's held true all season. Just my observation, FWIW....