Honest answers aren't gonna make much sense to you. Why? Because this question is absurd. I understand that you want a shortcut to the hulk physique, otherwise you wouldn't be looking into steroids at your age, but skipping the basics (test) of something already advanced (steroids) is complete and total insanity.
I have a better question....lets pretend that you're 30 years old and have been dedicated to your physique for 12 years. Ok...at that point you are around 200 pounds and very very lean. Your bench press hovers in the mid 300s for a max and that's the absolute best you can do. You feel you cant grow anymore without steroids and you've paod your dues. You know what is like to eat right and workout.....through illness, death in the family, and all manner of personal loss and trials. So you're gonna take the plunge......QUESTION why not start with test only cycle at that point? Tren is hard to manage. Know anything about tren? The sides.....the difficult to explain gynecomastia that is not related to the estro? Hmmmm. What about the cardio issues. How long are gonna run this tren for. Tren as a first cycle you will bail out the second it kicks in. Why? Because you've never managed the issues that come along with it.....not to any degree.
You ask.....why not tren. Well pretend you're 30 and answer me WHY NOT TEST ONLY?