I have been going to a pro shop for a while, using them for as long as I can remember but they are not the best. But i continue to use them because i have developed friendships with them, they are professional and courteous, and feel a sense of loyalty to them. but over the years as i have become a more serious bowler i have my regrets in using them. i have 4 balls in my trunk right now all drilled by the same guy and none of them feel the same. i cant stand it anymore but at the same time i dont want to be disloyal