I mastered all the jobs i needed including red mage super quickly in the area where the last save point is (it becomes a save point after you defeat necrophobe)... Monsters there do not give any EXP but give skullskullskullskull loads of ABP, the lowest being 29 per battle im preety sure... and these battles arnt hard at all when u annihalate them with rapid fire, two handed, finisher etc...

But the best monster i've ever come across is in the same area, they're called Movers, they come in packs of three in a triangle and give you 150,000GIL and 199ABP. no joke.