Warlock grand stone question

[Shockzulu]

For demo which would be the best stone to use Grand firestone for the extra 1% damage to direct spells and the 196 cirt or the spellstone for the extra 1% damage to periodic spells and the 240 haste?

[Jessicka]

Spellstone, much haste good.

[vemynal]

deep destro: fire stone

all other warlocks: spellstone

[gherkin]

deep destro: fire stone

all other warlocks: spellstone

Truthspeaker!