Anyone use CD tweaks

I have used pens, polishes, freezers and hear nothing of real value.

A friend uses Shine-Ola, and he brought some over to do an A/B test in my system. For the test, we used two burned copies of each selected CD. One burned disc he treated (but did not tell me which one), and the other he left alone. We tested four selections as I recall, and I identified the treated disc every time.

The sound was louder, more open and with better dynamics. It was a subtle yet obvious difference.

Another vote for Shine-Ola. I use it and definitely hear improvements. The sound if often more open, transparent and detailed.

On some CD's the improvements are significant. On other CD's it is subtle.

I think that the improvements are more obvious as your system becomes more revealing.

I am using optrix cleaner mainly for that,notice some clarity improvement.I also use rd3 after cleaning though too.The combo seems to offer a nice clarity improvement to my ears.

I use walker Vivid and Olde English Polish and they both yield the effects Tvad described:
"louder, more open and with better dynamics"
I can no longer find satisfaction with untreated disks.

Also, freezing seems to be the most effective even though the description(s) of why it works make no sense to me. Its one of those things that shouldn't work, but does.