There was an old forum post with what seemed like good recommendations. I can't find it right now but this one also seems pretty good - http://forum.square-enix.com/ffxiv/t...ild-philosophy.

Generally you want a hybrid to give the most overall coverage. If you are only planning on leveling one role at a time though I suppose you could shell out for the Reagan Pepper from your grand company whenever you change roles and respec your chocobo.