I keep it simple, around 200 grams of protein, 50-60 grams of quality fat, and all the rest is carbs. The amount of carbs depends on my activity level for the day. A diet for me is cutting my calories 400-500 below how many I burn for the day. One day a week I up the calories around 500 above what I need, just to keep up my glycogen stores and keep me sane-kinda like plornive said. This always works for me-I've been below 6% since last september and am still gaining muscle.