I agree with Willster, and with Wc65mustang regarding ZYX's in particular being very quiet in the groove. They're quieter than my Shelter 901 for example.
The ZYX stylus is indeed incredibly tiny. A friend of mine took 200x photos of the styli on a Grado, a Denon 103, a Shelter 901 and a ZYX Airy 2. The Grado looks like a war club, the Denon like an axe, the Shelter like a chef's knife, the ZYX like a surgeon's fine scalpel. Seeing those photos side by side brought home one reason for their differences in performance.
Some other cartridges have similar styli. The Lyra Olympos was as quiet as the ZYX UNIverse when I heard them side by side. The Lyra stylus was longer, but it looked equally tiny in cross-section. They probably both ride deep in the groove, below much surface damage. I believe most VdH's and top Dynavectors are similarly equipped.
One downside of styli like this is that records must be kept scupulously clean. They will scour anything out of the grooves, and the tiniest fleck of dust will impair their otherwise remarkable tracing of HF groove modulations.