Cardas / Ayre system enhancement CD

I currently own the XLO / Reference Recordings Test & Burn-in CD, which contains a demagnetizing sweep, a demagnetizing fade, and a system burn-in track.

Would there be any additional benefit from acquiring the Cardas / Ayre CD or would the two CDs be redundant?

Thanks in advance!
That's funny, I own the exact same XLO disc and was wondering about the Cardas / Ayre disc also !! Thanks for asking !!
I have the XLO / Reference CD you refer to and the Ayre / Cardas disc. I found the demag track on the Ayre / Cardas disc to be noticeably more effective than the similar track on the XLO disc, probably two or three times more effective. Well worth the $20 and recommended.