as the preview MF100 chip used in the nice NESCAF filter kit is discontinued already (DIP package) the new chip has been found for this concept as the replacement.
Did You compare the results of the NESCAF filter using the old MF100 and new LTC1060 replacement please? I am interesting the differences and results... do not hesitate to share Your opinion and experiences over there.
Thank You for Your time,
73 - Petr, OK1RP