Best mat for a Rega Planar 3?

Anton - I use the Grungebuster, which was recommended for the P9 ceramic platter.  As for glass platters, you can contact Herbies for recommendations (when they reopen post virus). I also used a cork mat on an old Linn table, but can't remember which one.  

This one if you can afford it. 

Thanks. Any one in particular you like best?

I have two Rega P9's and ditched the felt mats, which caused static and served as dust magnets.  I now use Herbie's mats and have been quite pleased.