Straight shaft set ups are NOT for everyone. If there is any possible way, try someones before you make the expensive plunge and regret it. A flat swing in a full arch is harder and tends to butterfly up on the end sweep without effort.
If you are prone to Lateral Epicondylitis (tennis elbow), you know how painful it can be. Running a straight shaft maintains a minimal bend and torsion of the elbow, and directs the swing of the machine to the shoulder. Using a straight rod to decrease wear on your elbow is highly recommended for Epicondylitis.
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