It is best to know wat is your bowling style before you decide
wat ball you wan to buy, anyway different ball is suitable for
different occasion. No mercy will be a high performance ball, more
suitable for medium to oily lane condition. Cost abt $330 to $360
depending on ur ball driller.
If you use only 1 single ball to bowl, you have to make your choice
properly, otherwise when you meet with dry lane condition, you will
have more difficulty if not impossible to bowl as the ball will
tend to react too early due to the aggressive coverstock or
overhook.