This is a quote from EJ
Shadowcraft instead shows that at high haste valuers (7k+) agility is better than 2x, doing some tests on SC i noticed that soft cap to start gemming agi over haste is at about 6700 for my gear, is that right?At some point your gear will reach a level where two haste rating is higher valued than one agility and you should start gemming towards haste. Exact calculations are not yet done, but initial tests showed that this happens around item level 480-490.
SC link here http://shadowcraft.mmo-mumble.com/eu...KzZl0R26ASef4N
(p.s. i should change enchant on gloves form mastery to haste)