Okay i have run then all tren ace, tren e, tren no ester,and mtren...But my best gains on tren with fewest sides are with the TREN HEX...any of you tren lovers that get serious heartburn and extreme insomnia and sides should look into HEX...Also a plus with the hex you can run lower mgs i would say a 300mg a week tren hex cycle would be comparable top 500mgs of tren E...I was very very impressed with tren hex compared to other 19 nors...I hope this helps some of you tren lovers!!!