GFG VS PWS
 

Granite Face Grinder VS a Poison Wind Censer for a Shaman Twink, which is the superior 2hb?

At what point does the GFG pull ahead of the PWS?

GFG after Level 29/30 when damage uncaps, PWC before then.

Ratio on GFG is superior, so as soon as the level relevant damage caps are lifted, GFG.

Considering the cost difference, I'd always recommend the PWC unless you're loaded and cash isn't an issue. If you're not loaded, I'd argue the GFG isn't worth the cost. That's money better spent elsewhere.