The Valkyrie Profile series is developed by tri-Ace, not Square-Enix, but yeah. >_>

It is hard to say what SE game I like the least, since I'm generally not very picky. I guess I'll just throw in Final Fantasy Mystic Quest.

You should try Secret of Mana (unless you already have and didn't enjoy it), Lunar. And Seiken Densetsu 3. They're both much better than Secret of Evermore.