I read somewhere a long time ago that Masteron's capabilities are best utilized in its short ester form i.e. Propionate. There may not be any validity to this so take it with a grain of salt. I'm running the Mast Prop currently right now startnig the 3rd week. Pinning 150mg EOD. It is very impressive stuff. First time using Mast ever and it wil not be the last. It's the DP flavor. Certainly helping me to retain any and all musculature whiel in a calorie-depleted cutting cycle. Good luck.