I agree with JPR. Lane #1 makes the best lighter weight balls, as their 14 lb. balls have the exact same size and weight core as their 16 lb. balls, except for their Uranium Buzzsaws, because the core is so dense.
Lane #1 was the 1st company to use the same size and weight cores in their lighter weight stuff. I believe they take 1 lb. out of the core of their 14 lb. balls to make 13 lbs.
You're getting maximum core weight/density in the lighter balls, which means they will hit harder. The other companies are tuning into this concept, and are catching on. But, you can't beat the power of a Buzzsaw, especially in the lighter weights. =:^D