I used prop in 2010 and 2011. Last January I switched to cyp. I have been on it all year, cyp from different sponsors and I can say that I definately don't get what I did from prop. Right from the start in January I noticed it. On prop my sex drive was higher, my waist was cut when I ate shit. Even though when I went up to 700 weekly, which was rare, I got acne on my arms, the results were awesome to me.