I agree with NEEDSIZE. I have been on for at least 2 years and just alternate various tests and others throughout the year. Enathate, Propionate, & Deca have been what I've used the most. Then alternating with Cyp, Sus250, Tren, Dbol tabs, & others. When I was 27-28 I was still doing one-drug cycles and making good gains (that was the '80's). I'm 39 now, have cycled and competed for many years, and the year-round method works best for me now.