Yah, maybe Powerfull is better than the NHA, I don't notice a difference without the NHA, but the cAMP on its own kinda sucks, really does nothing and I'm thinking it was a waste of money, but I've heard good results of others using c2, camp, and powerfull during a recomp.
If I had to do it again, I'd just use some of the Superdrol mimics that are out there and some albuterol.