NPP, I'm the the spokeperson for this stuff. lol
Seriously, it's one of the reason I was able to get so big.
Test effects me very negatively. I can't deal with more than 350mg of prop a week. More than 20mg of Dbol or 30mg of winny makes me shed too much hair. More than 50mg of var kills my joints..etc.
More than 300mg of Deca kills my sex drive.
Npp is the base of every one of my cycles. I use about 700mg a week for 6-7 weeks and I never had a problem.
Deca use over 300mg a week is risky since it has a cumulative effect. Plus there is no such thing as a short cycle with deca. It takes 3-4 weeks to reach full levels and it takes 4-6 weeks to clear your system. Very wasteful unless you plan on using 200-300mg for joints.
Npp is out of your system quickly and doesn't take much time to clear.
LiftChief, I suggest combining Prop and NPP, a fast and potent Test/Deca stack, you can't go wrong.