Turntable Mats for Technics Grand Class, "G" Series

I've got a 1200G and I use a Stein Music 'The Perfect Interface' Pi mat. It's the only mat I've ever used on it, and it sounds excellent. Might have sounded just as excellent with something less expensive, but I'm happy. 

I also use Boston Audio graphite mat on my SP10 MkII, I purchased mine from Sakura.

I also have a GAE bought when they were introduced and like you have replaced the OEM mat.  In my case: leather, acrylic, Herbies, Origin Live (favored for years) and recently the new Origin Live Strata.  The Strata is magic.  Really.  Expensive (295 pounds sterling), but worth it and it has a return privilege if you are not satisfied.  One word of caution, Origin sells the Stata in a slightly smaller diameter version specifically for all SL1200 turntables.  Since I also bought a Strata for my HW40 in the standard size, I tried both sizes and much prefer the standard size mat.  The smaller mat just looks funny to me on the GAE.  Same price, same sound, just an aesthetic thing.

I like the OEM heavy rubber platter mat that came on my JVC Victor TT81. Seems appropriately firm to provide stability without transmission. I use a center weight, sadly peripheral ring type weight I tried won’t work on this platter’s edge.

I was reading an old thread about cartridges yesterday, and I came across Chakster saying the ONLY platter mat he was using at that time, on all his TT’s was

Saec SS-300 alloy mat

I made a note to check it out, I see there was an SS-300MK2

Any comments about it from others ..........................?

Thank you guys for all the insight!