Personally I'm a great believer in low dosages when cutting. I save my body's handling of high doses juice only when bulking, so my body reacts better. For preserving muscle mass and maybe adding a bit I personally believe that 250mg test weekly along with 75mg fina EOD and light dosage of anti-aromatase are enough (unless of course you're superbig and super beyond you genetic potential). Using low test and fina also allows you to enjoy your physique during the cutting process as your definition is not 'hidden' under sub-q water retension.