OK i dont got as much ex as u all with this game but id like to put what i think in to the mix.
My hunter is a BM. I think it is the way to go while u r lving. Think about it, while u lv all ur pet needs to do is tank and with the moves u get with Bm it is easer to do, without it u can ocasionaly pull the target. Plus if u r fighting more than one person then there r 2 moves with BM that can easily pull the targets. So u can just sit back and shoot while ur pet tanks.
Of corse if u plan to PVP or when u hit 70 or high 60s where u PVP alot u got to switch to something els cus ur pet cant tank ppl. but im not that high yet so...