It's not one size fits all.
I use coconut oil for cooking meat.
I use butter for vegetables.
I use ghee for frying eggs, and in Bulletproof Hot Cocoa.
Butter has a better taste because the milk solids provide some sweetness, but ghee is better for hot temps.
5'0" female, 42 years old.
Started Primal October 31, 2011, at a skinny fat 111.5 lbs.
Current weight: 101.5. lbs and holding steady. Spring yardwork here we come!
Co-worker 1: Needs to lose ~50. Now he wants to start Mayo Clinic Diet. Yeesh. Give it up, man.
Co-worker 2: Needed to lose ~55. Lost 20 from stress. Started Primal in Sept, lost 20 more, but gained 10 back on a carb spree. We're working on it.