I agree 100% with BurghHardcore. Do NOT TOUCH EITHER. those products will NOT do what you think they will, they are not magic pills. you need to eat more, and when you think your eating a ton, double it. there is no secret to gaining weight, you need to eat more then you burn. if you take those products, you probably wont grow just because lack of calories.
try some Mcdonalds, taco bell, anything high calorie. if you are playing football your burning a lot of calories, and need to eat more to make up for those. PM me for any advice, we have all been there before. i am 22 and still have not touched hormonal products. food is the most anabolic substance, and at your age you will grow like a weed.
just so you know taking those products at your age, there is a chance you can screw up your body for years or longer.
all you need... food, protein, multi vitamin, and maybe creatine mono.