But, for regular P Mount, one of the very best-sounding carts I have ever used is a second hand AT402EP with a $12 Pfanstiehl 4212-DE, you know the grey one with the little green "E" on it. I have a ton of P Mount carts, but this combo truly shocked me. Yes, I normally run a Pickering TLZ-7500S with a sapphire cantilever/Paratrace D81 retip. No, this AT402EP/Pfanstiehl 4212-DE is not at that level. But it's got its own magic.
Contrasted with the amount of fuss that has to go into getting a Grado to sound its best (which is next to impossible on most T4P turntables), this little AT that can be had second hand for very cheap paired also with this very cheap stylus and the results to my very experienced ears is nothing short of alchemy.
It sounds a lot closer to a 150MLX than most would be comfortable with admitting. Sure, the detail retrieval is not exactly on the same level of course, but the next question might be "But do you really miss it?" It's unbelievable how good this sounds. If you're still not convinced then put 150MLX stylus on it and your out of pocket expense is still basically whatever peanuts you got the cart for (perhaps you've already got one lying around) and the $200 for the stylus. That's $150 less or thereabouts than a 150MLX cartridge, which won't fit your P Mount table anyway.