The 500, a rebadged Pickering was put into a lot of tables and universally well liked. No, not a 68x level cartridge but on a price performance competition very competitive. I think I read somewhere they are still produced, will not swear to it.
As for the 2 vs 4 coil fight, either can be 1st quality or trash, just a matter of design and whether the assembly person was sober of drunk that day. I think for consistent quality of a mass produced cartridge, so to speak, the only company was Grado when it hit the dealer's shelf. Next was Micro Acoustics. All, others were hit or miss; even their totl hand picked, tested and check pieces.
You may want to look at the Grados, also. Even for most of their older bodies they can supply a replacement stylii for. If I were to need a cartridge today, Grado would be at the top of the list.