Anyone using the SID 14 for drawer load cdp's??

How do you like them? Improvements?
Perhaps I should not have referred to the abbreviation. SID stands for "Sound Improvement Disc", a green mat used to reduce light reflections when playing CDs,DVDs,etc. There are 2 types : #14 or #15,depending on the mechanism of the intended player. I'm thinking of getting one for my Lexicon RT-20 and am hoping for some feedback.