Weren't you currently running SUST... And that's why you asked about the ethenate, correct?(yesterday) it's up to you but how are your gains so far from pinning the SUST.... If good and your happy I wouldn't switch(though you surely can)... Just curious as to why you'd want to change - is it just the $$$ issue... If so next time just try and plan better and stick w/your cycle as planned from the start!
If it's about the $$$ then yes switch to test e... But I wouldn't do this on a regular - switching your test base around... Esp if other compounds are involved... GL Miami!