you will get your best strength gains from kre-alakyn...period. If you want the pumps etc, no-xplode is a great workout tool, or if you prefer the sustained pump NO2 would be the product of choice. Personally I like the kre-alakyn + 3 or so grams of AEE in ONE product...best of both worlds
with the kre-alakyn there is no conversion to creatinine, and therefore no waste, so don't "waste" you $$ of other forms. no pun intended