Improvement cd disc?

A few days someone post a cd improve disc this goes on top of your cd and comes in different thickness,my player is a sony high end player good transport not the best but is fine and looking for advice before buying.
Those things can get caught in your transport too easily. Unless you have a top loading transport that doesn't move, I wouldn't bother with them.
Ok thanks for the advice.
I second Zd542's opinion.
Thanks also for the advice.
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Hi,where could i get more info about the marigo? Any info about the thicknes of the disc? Price on the marigo disc ?