i agree with bradG working out for that long has its disadvantages to it.. as far as the best brand of creatine im not to sure since im not a very experienced creatine user but i can give u one hint make sure u load with your creatine first before u start to take in like 5 grams a day, and maybe mix in some dextrose. if you want more info on creatine theres tons of threads here on it go to the search bar on the top and put in creatine im sure a huge list of threads will pop up that will answer any questions u have