Its good...I got a jug of deca 300 three months ago and I have barely dented it.....Can't really beat it for the price. I have used ttokkyo, nor, normas, and good old fashioned organon, and I really couldn't tell a difference. I can say this because I have used deca only to bridge in between cycles.....and I realize that stacking other drugs can be misleading when it comes to knowing the purity and quality of just one in the stack.