All us veteran's went through this when we were Lvl 60 (pre-BC) and they released the new talents (a few weeks before BC went live).
The general consensus was that Mangle is king. At 60, most of us respecced to Mangle and picked up OOC as soon as we hit 61.
OOC is fantastic, but mangle adds anything up to 50% (*) to your damage dealing capacity.
(*) No maths to back this up :) But mangle is by far the greatest feral talent available