I run the ones from Harvey, but the one size smaller....12.5 or 13 lbers, can't remember exactly what they are. They are great, they track well and blowback is pretty minimal down to about 90 feet for me. The deepest i went with them was 115 and they got down there. I run manual riggers so if I ran 16 lb weights, i wouldn't be able to lift my arms at the end of the day.