Six.One 95 (16x18) has more Power, Pro Staff more Control and Maneuverability. I won't compare them on the Feel department because I never hit with the 2014 Pro Staff 95, but 2012 vs 2012 the Pro Staff was softer but somehow also gave me a better feedback (I had a better idea of how well/bad I hit the ball and in which part of the stringbed). Incredible dwell-time, also. I also found it easier to generate Spin with the Pro Staff despite it having one more Cross, but that is very personal. Most prefer the 6.1 by a mile, as you can see I have a different opinion. Demo both, if you can.