I moved from Callaway 2004 BB 3-wood (with ProLaunch Blue R-flex shaft) to Callaway 2007 BB 3-wood (with Aldila NV R-flex shaft) and I could hit a golf ball much much better, higher launch, cleaner contact, ball goes farther... so I am not sure it's the Aldila NV shaft or a combination of shaft and 2007 BB 3-wood head, but definitely it's a much improvement that I need