I am not a serious competitor,
but I have run tren and deca together.
For me, the sides are less if I have no test/low test. 150mg per week
worked great for me, when I ran it in higher doses (500-750mg) it
seemed to aggravate gyno, especially with the tren/deca combo.
currently running tren and deca with mast for libido. I do take 150mg of
test just for health purposes.