I'd say play either one. The PSX version is the most fun for me which is why i play that version because of the skills you can keep after you mastered a class as that carry over and they have OP Hybrid skill that break the game entirely. Also the translation is more accurate to the original. The 3DS version you can level up and master classes more faster. However, they have been rebalanced certain skills and most of them (Hybrid Skills) are not in the remake. Also you get more access to items and equips that not in the original and they are now easier to find. Again i say play both of them. Also, i cant say how many hours i played it because i always leave the game on when i play the game. lol! (500+ hours) normally it would be around 100+ hours.