I discovered an easy & quick way to level up just today since I'm trying to get most of my characters to at least level 70 or so going after Ultima & Zodiac wont be as hard. Equip all 3 of your characters with embroidered tippets & head to the Cerobi Steppe. Go after the Ring Wyrm's, they give a minimum of just over 3900 exp which with the embroidered tippets is almost 8000 exp for one monster!!!That is as good as killing 10 dead bones in the Nabrues Deadlands & much less time consuming. Using this method I leveled Vaan from level 70 to 73 in under an hour. Just thought I'd share.