Fire or frost? Heat or cold?

So Recently Mage bugs have been fixed for both spec.
So I have been trying to decide between mage or hunter for my 2nd character.
My main is Warrior. So eventually my choice is Mage. And Now I am calling for fellow mages to elaborate about these two specs. What you choose and why?
Thank you fellow Mages.
Forgot to mention. Mist of Pandaria Expansion

meu elemental ta bugado o q eu faco, nao consigo colocar as skils na barra de poder, coloco ai depois some

You already have Warrior, make Hunter to be an epic facerolling machine