NPP is awesome. It has so many uses, but my favorite is to get that nice "pop" when the tren can make me flat.
It makes the joints feel better, not quite like deca as I believe the extra water in deca does more cushioning, but NPP works well for the joints.
It does give me a little lump in the nips especially with the tren, but nothing novla cant handle quickly.
I always have some mast and test in there as well so as far as sex drive goes NPP wont really fuck it up...at least it hasnt for me. EOD pinning is good with phenyl prop esters.