Pro Kennex promotes its kinetic system as helpful in preventing arm & shoulder pain. I'm looking for feedback from anyone who's hit with their Pro 7G or 5g and found this claim to be true. Or is it just hype from the manufacturer. They are priced right, but I'm wondering if using a soft string, strung low, if these sticks are worth a try. At close to 12 oz and 100 sq in, the specs are kind of what I'm looking for.