Macros

So I tried different macro calculators and always get different recommendations. A friend suggested 40p/40f/20c and I've been following it for around a week now so it's too soon to judge if it's working, but I noticed my tummy got a bit flatter (also doing insanity) and arms got bigger (fat big, not muscle big). I exceeded the 40% fat limit for 2 days binging on nuts, but was still under my overall calorie goal.

In your experience, what's the best calculator? Or do you recommend a certain macro ratio?

28yo female, 178 cm, 94.5 KG