I will never run deca again as I ran it twice before and both times I got deca-dick like crazy and was soooo shutdown after my cycles that I vowed never to use it again. But, NPP on the otherhand, for some reason, does not shut me down like regular ol' deca. I love NPP, I'm running at 400mg/week right now with 700mg/week test prop. Fucking awesome cycle. Try it bro, you won't be disappointed!