Let's talk nocks.

How important are the roles of nocks, with reguards to accuracy. Are the factory nocks (say beman) sufficiant, or should I say, just as accurate as other factory nocks. Do you guys recomend "after market" nocks?

How much accuracy do you gain by going a differant nock? Are you just gaining speed with going with something different?

I've seen nocks such as bohning, or even the NAP Thunderball, a magnetic nock system, and wonder how they relate to others. Just curious.