I use Optimum Nutrition Double Rich Chocolate and Vanilla Ice Cream, though I think the latter has been discontinued. I've posted my routine (though it's changed since then) and my nutrition plan, so you can search for that if you'd like to see what it is.
My #1 rule about supplements is to not supplement something your body creates (creatine being the best example). As someone stated, improper use of creatine could make your body dependent on the supplemented creatine, which is bad news unless you feel like forcing that crap down your throat for the rest of your life.
