BM hunter weapon? Illidan's (dont say omg illidan i need to kill all other boss before) is a purelly most beneficial to BM hunter rather than MM or SV. Its procc is a very nice (if i didnt made wrong calculations) 64mp5 at best case which is a very nice for a raiding hunter. Also there are many others, Legionkiller, Serpent Spine Longbow, Black Bow of the Betrayer and Bristleblitz Striker which have the wonderfull 3.0 spd. Also u can achieve a weapon speed u want, by using passive haste items, like rings, shoulders, gloves etc. On the other hand  maybe ull find some other fights more easy a Survival hunter, or even as Marksmanship due to not pet friendly(u can learn how to control ur pet anyway),while now the Haste rating items are here to balance the speed and together the screwed rotation and to give mm the chance to "breath" again as raid specc for its old "lovers".