Palle, thanks for the info. This post is not intended to flame your post. My question about these kind of tests, though: isn't the only credible conclusion that can be drawn from this test is that the Mizuno is the best driver for iron bryon, at the tested swing profile and swinging at 90 mph (the results may be different at 95 mph). If you lined up 100 golfers with the same index and the same swing speed and conducted the same test, would it yeild the same results? I don't think it would. Everyone's swing is different. I may be stating the obvious, but I am proposing that we consider this kind of info in the proper context.....this info is interesting, but everyone reading the info may acheive different results, and it does not confirm one driver's superiority over another.