One note, I am coming on 9.5lbs. I believe I am reaching the point of diminishing returns. The heavier
weight is just trying to hard to to come off and I'm starting to feel pain in my penis head. Basically, instead of the majority of
weight tugging along the whole penis, the heavier
weight is just tugging the head.
I am going to try to condition myself to 10 lbs. I want to put my excersize
weight to good use

. So I would definitely keep it under 10lbs. Because of diminishing returns and risk of it breaking on your and causing pain.