Meteorb Firebolt vs Fire Mas

[GooseOfMercy]

Finishing off my Meteorb Sorc with Full Tals, magefist, 2xnagel, spirit, war travs, anni, storch. Merc does not have infinity (insight/andys/duriel)

Just wondering what, in your opinion is the best to get Firebolt or Fire Mastery after I have lvl 17 cold mas, max orb/fireball/meteor? Or, would switching between the two back and forth be best... like 10 bolt 10 mastery.

Thanks for any info in advance =)

[Nimbostratus]

From the "Synergies and Masteries Explained" thread, for optimal damage:

Fire Ball: Total points in synergies should be 10-11 more than the displayed level of mastery
Meteor: Displayed level of mastery should be 2-3 higher than total points in synergies.

So optimize for whichever you use more, Fire Ball or Meteor.