Depends what you prefer; magic vs melee, DoT application + casting vs GC hits & weaving in oGCD, an evenish-paced casting rhythm vs hectic tempo melee gameplay.
It also depends on what you plan on doing with said Jobs, and whether or not it's realistically feasible to achieve that, both with your skill level and with w/e type of static you play with.
Bear in mind though that if you decide on going with SMN, in 3.0 it's getting overhauled, with the potentiality of the current iteration of the SMN's rotation being liable to change. So that's something to consider too.
