I got this ball about 4 months ago and use it in league on synthetic lanes on medium oil two nights a week. I find the response to be very predictable. I am right handed and stand between the center and first arrow to the left of center and throw over the 9-12 boards. I am a stroker with a medium-light to medium ball speed. The rise in my average from the high 170s into the mid 180s is greatly attributable to this ball. I just bowled my first 700 series this week on Tuesday league with this ball (202, 267, 280). 5 of my last 8 series have been over 600 (including 676, 644, 645). (I do not know the drilling pattern, pin placement or top weight). I highly recommend this ball.
My other balls are the Columbia Professional and Wild. My first ball out of the bag is the Overdrive until my area dries out too much.