I bet, that's 1.25 grams of test a week !!! If you need that much, so be it, I still stand behind using one type at a time if you have enough, or even switching from one type to another mid cycle if you run out, planning for the timing change of course. As long as your blood levels arent hitting peaks and valley, you will be happy with results and have fewer side effects. One ester is just easier to manage I guess is the bottom line. Or in sust's case, 4 esters