Use a spreadsheet or a sim or look at some logs, and then make your own gear decisions.
In Fury, I currently dual-wield Axe of the Tauren Chieftains. But now I have two Gurthalak, Voice of the Deeps.
The change PER weapon if I go from Axe to Voice of the Deeps is:
- 140 hit (originally 232)
- 295 expertise
- 92 crit (from a reforge taken from hit on the Axes)
and of course the Tentacle of the Old Ones can spawn from Voice of the Deeps
Equipping the Voice of the Deeps will keep my hit rating above 8% (10%) but drop my expertise to 10 and I will have to compensate for that through reforging (which will drop my crit and mastery some).
Basically, will I gain much with the Voice of the Deeps when I will have to reforge to raise my Expertise? (Landslide enchants will be placed on the Voice of the Deeps just as the Axes now have them).