There’s nothing overly subtle about the 4D 5Hundred. If you really like to crack your serves and go after your ground strokes, it has a lot to offer. The low swingweight on the standard model makes it easy to generate a lot of racquet head speed, and when combined with the open string pattern (16-by-18) it’s very inviting for putting spin on the ball. The racquet has a touch more weight in the head than it’s predecessor giving it a bit more juice, while still maintaining a reasonable level of control. The balance also helps with stability as does the 4D Braiding, strong aluminum pieces placed at four strategic spots on the face to prevent twisting. With almost an ounce more in weight, the Tour version provides more stability and absorbs more shock than the standard, something that appealed to the more advanced playtesters. Some felt, though, that the stiffness and power of the frame took away from their ability to hit touch shots.