I only have the Cathe green mat that came with the Turbo Tower, as well as a Cathe roll up "travel" black (non-sticky) mat from many years ago.
I did just buy her "new" round black mat, and
it! Best mat I've ever purchased!
Since you're looking for a yoga mat specifically, Gaiam now makes a much thicker 6mm mat that is quite good. I have two of these placed on top of my Cathe round mat for even extra cushioning. Mine is extra long and wider than regular yoga mats. Purchase on Amazon for about $26 each.