I didn't have a ps1 so I didn't play a lot of games. I played most of these as PC ports because the top 3 were available... then played some later on Emulator/Ps2... but Most of them I liked the same
1)Final Fantasy VIII (PC)
2)Metal Gear Solid (PC)
3)Final Fantasy VII (PC)
4)Final Fantasy IX
5)Vagrant Story
Xenogears swaps with vagrant story often though... but for this Vagrant story gets 5