Just my $.02, I'm a PROUD owner of the new Boston Audio Mat on my Technics GAE with an SME 309 arm. I've tried Herbie's way excellent, cork & rubber & Teac paper mats. All as you know have their own signature, but the BAM brings the best out of my deck!
Now if I can find a suitable tone arm base material, I'd be a happier camper. Always going down the Rabbit hole........