No makers I know about are producing a turntable that has a P-Mount tone arm.  For legacy turntables that require a P-Mount/T4P cartridge along with a record collection in excellent condition your choices for something better than a "starter" cartridge in the $25 to $70 range continue to dwindle.  Many major cartridge makers have eliminated all but their lesser P-Mount cartridges while others like Ortofon stopped making any T4P (P-mount) cartridge at all.  The AT-311EP is possibly the best sounding P-Mount cartridge still widely available at a price that about anyone can afford.  This AT311EP is not the best T4P/P- Mount cartridge ever made or even the best one still available at any price but in the price range it performs way beyond the cost.  (If you have more money to spend the Grado Black T4P is $75 and the Gold Grado T4P is something over $200.  The AT311EP specs approach the Grado Black for way less money.)