Optimal is relative to the individual. Optimal means you feel good without complications. You no longer have lowT symptoms and you have no side effects associated with TRT. Where this falls number wise is going to be different for everyone. Some men need to be in the 1200 total range, while others do great in the 700-800 range.

*Do not worry about what a range says....ranges are worthless and tell us nothing....they're averages from random segments of the population.
*Do not worry about what is optimal for your friend or someone else, you're not them, you're you.