Doesnt deca affect fatty tissue inside the muscle. Maybe that is why you get that large look...I have heard of deca being detectable in fatty tissue for longer amounts of time.
I think for me Ill save tren for a cutter. Pretty much I will use the same guidelines as winny. It did make me sweat enourmosly and more vascular...
when bulking and lifting hard and heavy, deca will help lubricate your joints better so i'd go with deca (just be sure to add a hardy helping of TEST .