Wee,
A friend has the Winfeld and it is a very good cartridge. I have only briefly heard a setup with the A95 and it ,too, sounded good. I would bet that there is not much difference between the two. The minimal body, and use of titanium frame for the A95 fits into the philosophy behind the design of the Vector arm--vibration in the cartridge should be transmitted away from the cartridge and through the arm to be dissipated in the base of the arm/plinth. But, as to the sonic result, who knows without a trial?