Apart from the injection schedules, there should be no differences between trenbolone acetate and enanthate, since the active substance is the same, and the ester only affects the half-life. If you feel any difference in terms of gains or performance, most probably it has to do with the product quality itself, rather than the difference in esters. Personally, I prefer the enanthates on all gear - less injections, less worries...and the same results.