What steroids to bulk up? big time fitness guys?

I might start steroids soon, and before i go any further anyone whose gonna read this and say "steroids are bad work out naturally blabla" dont bother to read any further. Anyone who has taken steroids or know a lot about them please read on. I have been working out for about 4 years, BUT that is on and off. I am looking to gain m and might stack test (testosterone) with trenabol. I want to know if this is a good stack and if not abusing, as only a beginning enhancement, if these are potentionally dangerous aside from all the EXAGGERATED things that people say about them. Thanks to all answers!