MM isnt it? ... no? i accept sugestions!
Lol....tough one. World farming or instance solo-farming? Stick to the spec you're most comfortable with, but people over at the Warcraft Hunters Union suggest that MM is the best for extreme soloing because of the self-heal.
IMHO, if you can consistently multi-misdirect mobs on a tank pet and AoE them all to death, stick to SV/MM. If you're farming single elites, MM/BM can be useful (I soloed world bosses with a Spirit Beast as BM and a beetle/turtle as MM), and especially MM when solo-farming instances. But still, it's really up to you and your playstyle.
My opinion is go with BM for extreme soloing (heroic instances, etc.). While MM and SV is definately capable (I solo heroic instances all the time as MM) I think BM better abilities for it (improved pet aggro, spirit bond, etc.).