Summoner Question: Where should I spend my Myth tomes first?

[varaville]

Allagan Boots of Casting
Before: INT+18, VIT+18, Critical Hit Rate+21, Accuracy+15
After: INT+18, VIT+18, Spell Speed+21, Determination+11

http://na.finalfantasyxiv.com/lodest...7af43f3c43828a


So what's BiS now? :V