Im not a huge fan of tren e. but I like tren a. The problem for me is tren (e or a)really interferes with my sleep. I wake up several times a night and sweat out the bed sheets. I also get noticable high bp on tren moreso then anyother aas. I can tolerate that for 6-8 weeks. after that I am done with it. for me 16 weeks of tren e sounds unpleasant. I also have not noticed the endurance issue on either tren e or a.
but in terms of effectiveness, it is hard to beat tren.