I have used Deca along with test on and off for several years. I have found that I get just about the same results keeping the dosage fairly low as I do with higher doses. My typical cycle consists of 300 mg of Deca a week with 400 mg aweek of test. Just make sure that 2-3 weeks after your cycle that you run some nolvadex for 3-4 weeks to kit your natural test production back in and estrogen levels down.