Optrix CD Plus/Upgrade Opinions

Has anyone tried Optrix CD Plus or CD Upgrade (devices designed to stablize spinning CDs) who can comment on their effectiveness?

Thanks in advance for any info.

I've used both and it's a nice upgrade from untreated cds'. I've moved on to Vivid by walker audio and Herbie's grungebuster mat. I would recommend both without reservation. Check the reviews at Audioasylum.com

I've never tried optrix in particular, but I HAVE tried auric illuminator, and I know it provides a nice upgrade in sound (smoother highs, deeper bass, richer sound overall). I imagine optrix would but a similar upgrade.