Dude just train harder and eat enoght protein. If your gona take any supplement just take whey coz it works. Besides, why do you want to get big so quick? the longer you take to become stronger, the more you are going to apreciate all your work.
That's a good question... I suppose vanity to be honest!!!
I have worked hard though, used to train at an elite level for sports but then gave it away for years. Now I'm trying to get back into shape but it isn't so easy these days, the pain hurts more and the body takes longer to recover lol!
Scooby has provided a great inspiration for some many of us, can't thank him enough for it. And the honesty is great too, the supplements industry is a scam - mostly.