Yeh just like the title says:
Which TTW/fire spec is actually better when we are talking about 25m ICC.
Here is a spec which Ekyu from Ensidia suggests: http://www.wowhead.com/talent#of0Vcu...hVubhst:ViL0co
And here is a typical TTW/Fire spec: http://www.wowhead.com/talent#of0Vck...hVubhct:ViL0co
Basically the difference is in improved scorch and student of the mind.
The argument for Ekyu's build I guess is that warlocks should provide the raid with 5% crit anyways, but still being fire without scorch feels kinda strange.
So what do you guys think is it better to go spec A or B?