I don't understand why people say that NPP is much more mild than Deca when it comes to shutdown and recovery. They both are the same drug, nandralone, and will shut you down hard and quick, no matter what ester it has. It does not linger in the system quite as long as deca, but it is still there for up to year. That is much longer than the majority of steroids.
The only real benefit I see with NPP is that is causes a tad bit less bloat. But bloating isn't all bad, especially when you are trying to bulk and add strength.. which deca is great for this.. if not the best.
you are confusing detectable times with active lives I think.
deca ester is a long ester and can linger around for 6 weeks or so
the prop ester sticks around 2-3 weeks or so. that is a huge difference