i have the barnett rhino sport mag (4 limb). had it for almost 5yrs. now and have never had a problem with it-even after it fell once from 20ft. in my tree stand. i probably shoot it 100-150 times a year (don't see the need to shoot it year round). the orig. string is showing some wear but still is fine but i'll probably replace it at the end of this season. just giving my 2 cents...