The cable chop sounds great on paper, but when it comes to the execution it's less of a core exercise and more of an arm blaster. Also, the resistance changes drastically from beginning to end.
With this method, the Swiss ball acts as a cam similar to what you'd find on a machine, giving you the feel of constant, equal tension throughout the ROM and putting that tension right where you need it.
This Tool Box series has become one of my most popular article sets to date, so why break with what's working? Here's the latest installment of this series designed to help experienced lifters fill in the blanks and learn the finer points of strength development.