For anyone who has trialed both tongkat ali products, do you prefer the 2% or the 10%?

It depends entirely on the person. I prefer the 10%. /u/Pretty-Chill prefers the 2%. Lots of people are split on which one they like best. I will say that across all customers, the 10% is slightly more popular. You'll have to try each to know how you will react. I generally tell people to start with the 2% first.