I have supplements and medications to give the cats. All the them have syringes, or many of them. Sometimes I'm given multiple syringes as over time the stop working right or the numbers fade off them. Each time I look at some of them I think - well this syringe looks less for 1 ml than this one.
Some brands are just really bad with the markings I prefer BD and Monoject syringes since the markings are consistent.