try em both out and see what works better. you might even try cycling back and forth between the two. maybe high carbs and training days and high fats on non training days. see what works and feels the best for you. personally, i always try to keep fats at a minimum, but every so often (maybe every other day or two) i get cravings for fats, and when that happens ill take in some healthy unsaturated fats like some kind of nuts, or peanut butter. though i do tyr to make sure that i get at least a small amount of fat on a daily basis, just not saturated if i can help it.