here is the problem. i am an athlete at a college that is sponsored by met-rx. we get free protein shakes after workouts. but the shakes have 80g of carbs and 40g of protein and have 800 calories a shake. my normal shake when not at school is optimum nutrition's shake (i use 2 scoops with milk) and it has 60g protein and around 6 carbs and only around 300 calories. should i take the free protein shakes or just use the stuff i buy. im 6'4 285 so i don't need to gain weight (which the metrx stuff is for) just some leaner mass. any advice or opinions is appreciated.