I have to agree with you. I can't find many RPGs worth the time of day on Playstation 2. I've played four RPGs since buying my PS2, and I've liked them all but there's basically no others worth it. Mainly because Australia doesn't get a lot of the RPG releases like Suikoden III and if they do, my local Electronics Boutique/Target/Myers don't stock any of them.
Favourite PSX RPGs: Suikoden I & II, Azure Dreams, Breath Of Fire III, Star Ocean 2, Wild Arms, etc etc.
The continuation of Legaia on PS2 is pretty awesome though.