I think the main advantage of Trib is there are no side effects, so even if there were only a small gain or even none at all, there will not be the serious issues roids can have, also Trib is cheap, especially if you wait for the discount days, 3 months supply is about 20 dollars.
I found when using it I felt my spirits were raised and I felt happier, which is a common side effect of higher test. Even if it just makes you feel good, it might be worth using lol
The only 2 products I can say I really felt a differece when using were the all in one cyclone, probably because of the creatine, and
casein protein a night time drink. Casein takes 6 hours or more to digest so gives you protein throught the night.