Im 6' 5", 30 years old, so a pretty big guy who could easily throw 16lb. I throw a mixed bag of 14 and 15 lb. I throw it pretty fast with a good amount of revs. With a speed of 18-20 mph, you might think there would be deflection with a 14lb, but I've never found that to be true. The balls these days have so much continuation, that I never see it. My 15lb stuff is for medium to heavy oil. I use the 14lb stuff for drier, broken down conditions so I can increase my speed even more. If I need to dial it up, thats the way for me. I have a 14lb urethane avalanche and dark star, and have blown away the competition in sport tournaments with shorter patterns. When I tell them they are 14lb, they can't believe it because there is still that mind set that 14lb equipment couldn't possibly carry the way mine do. Not the case in my experience. Find a cheap used ball and see for yourself. I have a 14lb Total Inferno im selling for $25 shipped, and 14lb Revolver im selling for $40 shipped.