deca is called deca cause of the decanoate ester
by your post it sounds like you are insinuating that sustanon is a quick ester, it is NOT. sustanon contains 4 different testosterone ester blends. only 30mg out of it is prop. the rest is intermediate and most of it are very long esters.
there is a nandrolone called NPP which is phenyl propionate ester. this is what you are seeking.. in the old days guys used deca a lot, you didn't have to inject it often (injecting wasn't cool like it is today with young guys) and you could inject 2CC's in 1 injection with minimal PIP and be done for a week. now everyone wants to inject daily