Ideally you'd want to try Tren A first so that you can quickly adjust your dosage if you have a bad reaction. On the other hand the first time I used tren was with Tren E at 300mg/week and I didn't find it to be unbearable. Mostly I had minor night sweats and an occasional insomnia. Over time these went away. Go ahead and try the tren E - just with a slightly lower dose and then modulate your dose upwards.