most of the fights are heavy on adds and boomkins are far better than SPs when adds are involved, boomkins still wont reach the 60% haste plataue unless they get the haste tnk and some reckless gemming and even then in BiS gear its a dps loss so we will still be in the 50% haste plataue, the more haste a boomkin gets the better they scale from it unlike a SP meaning DI is much better for boomkins and the raids dps.