It really depends on dosage. If your back looks like raw hamberger, it's time to get the needle out of your ass.
If I had to pick one, I'd say Deca -- might even clear up your complexion due to it's high progesterogenic qualities. But Deca isn't on my "recommended" list. Suppression, bloat, impotency, damaged sperm count and gyno is a lot worse than a few zits.