I need some input from some of you more experienced vets or anyone w/ solid info.

Which would be a better stack for longterm quality gains.
Test/Deca or Test/EQ ?

With Deca you have Progesterone Gyno (rare) and its also very suppressive. I dont really know any downsides for EQ - Im not really looking for vascularity at this point. Could help with appetite. Which is more effective as a mass builder with the test.
What dosages with around 500mg Test - Which brands of each are best. I prefer human grade stuff.

Any/All Positives and Negatives on both ?