Have gone both ways on this(high tren/low test and low tren/high test). I liked both ways but did see a massive difference when my tren levels got above 600mg per week. Strength and aggression were through the roof. Everyone has their sweet spot for tren. I figured mine is now between 400-600mg but everyone is different. There have been a lot of threads about this lately. If you do a search you will find a good amount of info.