The Shibata and microline styli have the most potential as they meet the groove with very narrow horizontal profiles, closer to that of the original cutting head. The Shibata was developed initially to track perfectly the 44kHz carrier wave of the RCA quadrophonic disks.
However, so that they don’t wear out so fast they have long vertical profiles increasing their total contact area. They are therefore far more sensitive to correct SRA adjustment than are less sophisticated shapes. Adjustment for correct SRA probably is the most challenging one for most vinylphiles. Compare to the correct alignment of a tape machine’s reading head.
Many users are therefore disappointed with these styli compared to a good elliptical one.