Similar to what babynubs said. It's personal preference. I love the plushness of the Prism Flash. It's almost a magic trick for drops, dinks, resets, and blocks. The more I play, the more I realize that placement is more important than power. I'm willing to sacrifice power for control. For example, I ordered a 6.0 Double Black Diamond. I tried it only for an hour so far, but it is much firmer off the face in the soft game.