Lushu Mines on that bridge that only spawns Skeletons, great for making money early game. I had chains up to 182 there in order to get 99 Bone fragments for a rough 18000 gil. Ozmone Plains, because of the purple horses that drop Iron Carapaces, 99 of those for a whopping 40.000 gil in no time at all (seriously, they can drop 4 if you start chaining them), and those werewolf-things because of the 2 lp they give. That's kind of the only time I remember grinding... After that, simply taking my route to archades and filling out my maps gave me enough exp and gil.

Been replaying it for a couple of weeks now, have to go to Giruvegan now, my main party is lv 50. Damn I love this game, it's so deliciously fantastic. An utter blast to play through, and everything goes much smoother and easier (even the grinding) now that I have all the knowledge and experience from my first playthrough.