@Metachoked 8 on the PS2. Gets full orchestrated OST rather than crummy chiptunes.
IV has a unique structure and a really gruesome final boss.
Monsters 2 for Game Boy Color lets you play with all the bosses.
3 is the most popular in Japan.
2 and 7 are the most hardcore. Not recommended.
I mean, I've learned some of the nuance that goes into those who do willing, professional sex work(Rather than victims of exploitation), but this isn't a show about that. It's literally guys rating women on a scale of 1~10. Garbage.