My advice would be to scrap the No-Xplode, and all GNC products (because as eric mentioned they dont produce a very "reliable" line of products and the people at the stores aren't very "smart"...most of the time at least, there are a few exceptions I'm sure) I would recommend protein from www.trueprotien.com, and if you dont want to go the online route, Optimum Nutrition's stuff. I would also try and find perhaps powered Amino acids when you run out of your capsules, so you can mix it and drink them before cardio or during your workout so you don't go catabolic while working out. (I personally think liquid would be better than capsules)

I've never used Lipo-6, but I've only heard positive things about the product so I'm sure its good.