Ya xp is much faster on leves, set home point to halitali, get leves at hali, once leves complete final node appears have it take you to drybone, choco/gobbue back to uldah, return, 0 anima used and take you about 15-20 minutes round trip including doing leves, and since moogle and ifrit you need to wait 15 minutes before re enter and you get less xp per time. leves are clearly faster.