I've played and beaten both versions and love em both. I'm replaying the NES version now actually, naming my OnionKids Luneth, Arc, Refia and Ingus just for fun and planning to beat Cloud of Darness without N/N/S/S party.

But I like the DS version more. Why? Because it has Refia, no more needs to be said.

And me thinks the DS version needs more love.