Bruce has been using these since the mid to late 80's. His choice on gauge depends on the guitar. 9's or 10's. You can google various endorsement ads out there. There's plenty...it's because of him many use this brand as they really do stay in tune nicely with tremolo systems.
Perfect strings for tremolo guitars. These really live up to their name.
Love these strings and they are on all my guitars with whammys. They really live up to their name...big time. As long as you follow the directions on the packaging, they'll stay in tune! Sound great too.