Are you still relatively lean? If so, I would only experiment with injectable winny when you are at the end of a dieting phase and you are absolutely fucking peeled, not for long, just to see how much of a freaky look you can produce temporarily, maybe combined with some other things.
Something like 400 Test, 500 Primobolan and 25-50mg of winstrol a day when you are single digits will produce an excellent look. Even though it's fairly mild, it's not exactly a feel good combo as some people claim though.
That's basically when you should take all your selfies / progress pics for the year, cruise for 4-8 weeks, then get back to growing lol.
That situation, and contest prep, are the only times I would consider the hassle of injectable, and I am a big fan of oral winstrol.