i was a little dissapointed in 4ad cyp COMPARED to 4ad prop. yes, i know "front load" blah blah blah, the only (alleged) difference is the ester length (and the fact that the longer the ester, the less active compound per overall weight) etc. however, i just LOVE 4-ad prop, and just far prefer it to cyp.
i think 4-ad prop is phenomenal stuff.