100% more flexability. I am a tall, stiff old guy with a high lunge finish. Knees are bent (about as much as they want to go), but I am still not close to the floor. I see a number of pros (Wes Malot, for one) with high finishes, so I guess it's okay, but I am still green with envy when I see these young guys with the super high backswing dynamically powering to a whisper quiet relese, Like Michael Fagan "Whooosh".
Not reallly required to bowl well, but it looks so great. I wish that were me.
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