I would say that PSX has more RPG's ,but the Saturn has more SHMUPS. I had a N64 and a PSX as a kid, and the PSX is the console that really made me a gamer. I love the games, and many of them are not to expensive, while on the Saturn, many of the U.S. games are really pricey. Good thing its so easy to either mod, or just use a action replay 4-1 cart to play imports.
The Saturn has a plethora of amazing imports. Very good arcade ports of fighters and SHMUPS. I would def pick one up. get a action replay, and a Japanese controller. The U.S. controllers are ass