From Plugged In Golf: "Building on that idea of consistent feel across speeds, the Mitsubishi Diamana BB gave me the confidence to hit all types of shots at all different effort levels. After a recent round with rental clubs, I’ve been playing with a lot of 75% driver swings, and the Diamana BB was sensational for this. It felt like the shaft was adding some extra speed without opening up my dispersion. When I turned my effort up to 100%, the BB kept up rather than asking me to fit my swing to the shaft."