I think Shure’s best ULTRA series of cartridges are out of production for decades, most of the new Shure were made in Mexico (not in the USA) and their lower range of M-44G or M-447 with conical styli and extremely high output are the most popular among pro deejays. Shure Whitelable is an awful sounding cartridge, but also very popular on the pro market. These models are very robust, but the sound is very bad compared to Grado Black (or Grado DJ200i and grado DJ100i - both are the best sounding cartridge for professional market today, but not as popular as Shure).
Anyway, if anyone looking for Shure it must be ULTRA 500 from the 70s/80s if you want the best quality cartridge from this company.
I’m not a fan of SHURE, but i'm pretty sure the Technics will make a new cartridge soon!