For me the best JRPG of all time is FINAL FANTASY 7 (PS1)
it started my love for jrpg genre and it's my first ps1 game.
It also started my love for the FF series!
It also gave birth most of the iconic video game characters such as Cloud, Tifa and Sephiroth!
lastly FF7 also introduced JRPG genre to the world
So i recommend you guys playing FF7 Ps1 before playing the Remake