The best for massive mass is protein, lots and lots of protein.
To answer your question on test cyp vs test e, they're practically the same and will have little to no benefit over the other. Take whichever you are more comfortable with.
your question is in the home brew section
if your asking which is easier to brew then the answer is testosterone enanthate
Test C has a tendency to crash and will not hold at higher mg dosages compared to test E
