I if any like prolab creatine, but it doesn't do much but give a little water weight, so i usually don't use it at all except when coming off of a cycle.
I have tried almost all of them and I get the biggest pumps from cell-tech...i don't know other then it just seems to work really well.. I don't load either..just 10grams a day post cycle
I just use EaS's plain creatine because I'm already taking Alpha Lipoic Acid, glutamine. Its not as expensive as some of the blend Creatines like Max Muscles Alpha One or Triple Fusion. Plus the way I'm doing it now doesn't make me want to puke.