In the end, there isn't a bad specialization, it is pretty much what you wanna do in the party
the buffs in transmute are nice and the party will love them, but buffers in general don't receive the credit due them when tallying up effectiveness
I prefer the elemental ones, specifically air, my kill count beat most of the party (red dragon sorceress topped me every time mainly due to the enemy formations)
Like I said, it is all in what you wanna do