Oh I forgot one thing...if gonna farm monster parts then NIN is best with Mug. Mug also increases drop rate and the amount. How I noticed it works is when I killed Black Sheep with it I would maybe get 3 or 4 wool from them if it dropped at all but Mug would also add to it. It would say something like "gained 3 wool" followed by "Gained 2 wool" right under that one a single kill. The higher your level I think the more you can snag at one time.