This question has been asked so many times already, you could've easily found the answer by looking around a bit.
ALL secondary stats for kitty are really really close in value, for what you're reforging mostly depends on your preferred playstyle and boss fight specifics if you care enough to optimize reforging for those. That being said, I prefer being hit/exp capped and stacking haste.
Last edited by mmoce6438d9a93; 2012-03-04 at 11:51 AM.
You're not going to see a significant DPS difference favoring one over the other.
That said, a bearcat would obviously go for mastery, so that's what I go for.