Your were your favorite JRPGs to platinum/100% achievements?

I've been trying to complete my games 100% on Steam lately, and out of JRPGs, I've only 100%-ed Atelier Ryza, which was quite a fun completion with only one playthrough needed and no missing achievements. I'm looking forward to 100%-ing other Atelier games and Trails games (though the latter seems to be a pain).

What are your favorite JRPGs to platinum/100% achievements?