I am currently 31 BLM and soon I will be getting my T3 Fire, Blizzard, and Thunder spells. Just looking at this from an efficiency standpoint, clearly the T3 spells do less dmg per mp. They also happen to have a casting time longer than the GCD. But obviously they have the benefit of providing a full stack of their respective buff and they do more damage per cast.
So my question is, what have you guys found to be more effective? Spam Fire 1 due to mp efficiency (1.52 potency/mp vs 1.33 potency/mp) or cast Fire 3 because it has seemingly higher dps (63.4 potency/sec vs. 60.5 potency/sec)?
Another thing: Fire3 has a cast time of 3.47s and a recast of 2.48. Is the recast time the cooldown for the spell or the time it takes to cast the 2nd Fire3 of a chain? Because if it's the latter it pushes Fire3 up to 88.7 potency/sec.
Just trying to nail down the mechanics of maximizing my output. Thanks in advance for your thoughts.
(Also- please forgive me if this has already been discussed in another thread. I didn't see one a midst the gazillion server-fail threads so I figured I'd just ask.)