Good Product or Nonsense?

This thread is just for fun. Right?

lowrider57 ...

I've tried a bunch of the after-market CD treatments. While some appear to "make the sound of digital sound more analog," by smoothing the sound, I've found that they remove some high frequencies. That's why I switched to a basic eyeglass lens cleaner. After cleaning, I use a Radio Shack DVD tape eraser to demagnetize the CD. 

I think it best to seek out recordings that were engineered correctly. If done properly, Redbook CD's sound amazing.

Frank

I've used Optrix for years and had only positive results with it.  It seems to improve the sound of some discs noticeably, though some it doesn't seem to do anything for.  I agree that using it on gold CD's may not a good idea.  I've used L'Art Du Son cleaner with good results as well, though it is more expensive.  

I've been using Optrix for about 3 weeks now. I buy a lot of used cd's & know for sure they sound better when they are cleaned. Can't really say if there is an improvement using it on a "clean" cd or not. Also hope David is incorrect here because I've cleaned a couple dozen already... Good to hear inna and others haven't had any issues with it. 

Thanks for all the experiences! 
Does anyone know if there was a more recent legit review
that followed a scientific method? 

If not why?