Red Mages and Bards will get to 75 the fastest. Black Mages are powerful damage dealers with the fast invite perks of also being a mage. Warriors and Monks are probably the most powerful damage dealers once they hit 75, but suffer slow invite rates because of the abundance of melee job competition. Rangers deal damage that's almost as good as Warrior and Monk damage, but they have to pay a fortune for each shot - Rangers are a good job for helping the economy. You might always be broke, but you'll feel good inside as you combat economic inflation and help take gil out of circulation. White Mages level about as fast as Black Mages, never need to ask for a raise post 33, and travel the world with ease due to the six teleport spells, warp and escape - a Whm is never far from where s/he needs to be. Summoners suffer for 69 levels, but are currently revered post 70. Paladins level fast because tanks are in short supply, and are a relatively inexpensive job. Ninjas level equally fast, because tanks are in short supply, but pay a small fortune in every party as they spam consumable tools to do their jobs. Dragoons and Dark Knights have the coolest looking AF, but can't usually wear it in parties. Since they spend a disproportionate amount of time LFP in Lower Jeuno though, this is no inconvenience. These two jobs look the coolest in Lower Jeuno. Beastmaster can solo all the way to 75. Thieves have the best tools to get rich farming/camping, and enough LFP time to make it worthwhile. Most other melees have to change their job to Thief to farm during LFP time. Thieves don't have that middle step - time is money. Samurais make good parties great, but a bad party is better off with a more traditional damage dealer. Most parties are bad. Samurais are thus unappreciated, which is a shame considering the perks they bring to a party.