Crash
The art style worked quite well to a point characters and environment didn't look like a bunch of strange polygons
The 3D controls were immensity tight and satisfying to play
I've played a lot PS1 games, but I always knew they were not good. They were the best devs could do at their time, and I respect their efforts but I just can't get myself to play any of them anymore
But Crash look and play very smoothly even for a PS1 game, and was surprisingly nice to play even many years later. Crash is my pick