I have been lifting for about 4 years and have used tons of supps. I have had lots of good results with certain things and have continued to use those. My size is great and I keep on growing but its time for me to try and cut a bit more fat. ive never had any luck with fat burners ive used before, they either slim everything down or just take off some subcataneous fat and put it right back on when done. What is the best fat burner to take that will also help me keep my mass?